Ross Giesinger brings over a decade of legislative experience at the Texas Capitol to the Cornerstone team, having served for six legislative sessions in both the Texas House and Senate.

Most recently, Ross worked as a policy advisor to Dade Phelan, Speaker of the Texas House, of Representatives, during the 87th Regular Session, where he assisted with the passage of over 80 pieces of legislation. Additionally, Ross drafted and managed several bills filed in response to Winter Storm Uri, including SB 3, one of the most comprehensive energy reforms in Texas in the last 20 years.

Prior to his time in the House, Ross spent several years working as general counsel and legislative director for Sen. Lois Kolkhorst (R-TX) and as the director of the Senate Committee on Health and Human Services. While at the Senate, Ross assisted with the passage of nearly 300 bills and worked to obtain funds for a variety of initiatives, including legislation that secured permanent funding for Texas State Parks.

Ross began his career at the legislature in 2010 as a drafting attorney for the Texas Legislative Council. During his time with the state, he has drafted thousands of pieces of legislation, allowing him to develop expertise in a wide variety of subject areas, including energy, healthcare, water, land use and development, transportation, insurance, labor, agriculture, wildlife, taxation, and state budgeting.

Ross is a graduate of the University of Texas at Austin and Southern Methodist University's Dedman School of Law. He is a member of the Austin Young Lawyers Association and was recently elected to serve on the Council of the Texas State Bar's Legislative and Campaign Law Section. Ross also serves as a Steward of the Wild for the Texas Parks and Wildlife Department and has been active in the Austin Ballet Guild, the Trail Foundation, and CCA. He and his wife Courtney live in Austin with their young son Henry.

David Browning is one of Florida's top political campaign operatives. David has worked with Florida's most powerful elected officials and brings a new dimension to Southern Strategy Group's team of lobbyists in Tallahassee. David was instrumental in raising millions of dollars for campaign war chests in the 2010 election cycle for Governor Rick Scott. David also worked for Chief Financial Officer Jeff Atwater and Agriculture Commissioner Adam Putnam and set fundraising records for those campaigns. Fundraiser, strategist, and confidante, David is among a handful of insiders who help guide candidates to victory in Florida.

David has been equally busy helping the legislative branch. David served as the chief fundraiser for Speaker Dean Cannon. David's responsibilities included raising money for Speaker Cannon's personal campaign, as well as working with House leadership to raise money for the House Republican Caucus. Through these efforts, the Florida House returned 81 republican members giving them a supermajority.

In the Florida Senate David represented Senate President Mike Haridopolos and Senate Majority Leader Andy Gardiner. David worked with Senator John Thrasher who was elected in a highly contested special election. David brings his unique expertise to the Tallahassee team and offers our clients unprecedented insight into the workings of state government.

David is a graduate of Florida State University with a degree in Political Science.

Craig Holzheauser brings to Cornerstone years of involvement in Texas state and local politics. The son of a state representative, Craig went to work in the private sector after college before beginning a political career at the state capitol in 2012.

Working as a legislative consultant, managing the campaigns of House and Senate members, and serving as legislative director and then committee director of the House Committee on Public Health in his first year of employment, Craig is goal oriented and proven himself to be a quick study. Craig has a keen political intuition and a knack for developing the type of relationships that matter in campaigns, service of an elected official, or success for his clients.

A native of Victoria, Texas, Craig holds a Bachelor of Science in Construction Science from Texas A&M University.

0-5 years

Annabelle Sebesta joined the Austin office as a Senior Associate in October 2022. In her role, she assists with administrative and support duties, scheduling meetings and organizing annual events and legislative receptions. Additionally, during the legislative sessions, she provides extensive support to the team by following legislation and keeping the team up to date with information.

Prior to Cornerstone, Annabelle served as Administrative Coordinator at the Office of the Texas Speaker. In this role, she assisted senior staff with correspondence, resource navigation, special property and supply requests. In the same office, Annabelle was a Correspondence Assistant, where she drafted correspondence by researching legislation and maintained data entry for incoming and outgoing communication. She also assisted the director of administration with onboarding the 87th regular legislative session intern class and new staff members of the office, as well as the production of special events.

Annabelle received her bachelor's degree in advertising from the University of Texas Austin.

Felix Chevalier is an attorney and government affairs professional with over 20 years of experience developing and implementing effective procurement and policy strategies. He's skillful at identifying and facilitating public-private partnerships. Felix joined Cornerstone's Houston office as a senior consultant in June 2022.

Felix provides expertise and client support at the local, state and federal levels. He also has an extensive national and international network, specifically in Central America, South America and the Caribbean. Felix has worked with companies in various industries including energy, manufacturing, transportation, agriculture, engineering, and technology. By leveraging his business, political, and legal experience, Felix has built a successful track record of working with clients to advance their strategic business objectives. He has strong relationships with the international diplomatic community and government officials. He has facilitated official delegations and international trade missions, representing companies, local governments and national associations.

In 2005, Felix launched his own Houston-based law firm, The Chevalier Law Firm, which he continues to manage and operate, representing companies in a wide variety of industries. He also co-founded Key PAC, which is a non-partisan organization that convenes business and community principals with political leaders on economic and social matters.

Felix received his law degree from St. John's University School of Law, his Bachelor of Arts from the State University of New York at New Paltz College and completed an Executive Education Program at the Tuck School of Business at Dartmouth College. He also speaks fluent Spanish.

Nial Patel joined Cornerstone Government Affairs in 2011 after more than seven years of service to Governor Bobby Jindal, dating back to his first run for governor in 2003. As one of the longest serving senior staff members for the Governor, Nial worked as the director of scheduling. Additionally, when Governor Jindal was elected to Congress, Nial served as his executive assistant. During his tenure with Jindal, Nial's duties varied from campaigning to research and outreach, working with elected politicians, stakeholders, and government officials from Washington, D.C. and across the state of Louisiana.

Nial holds a Masters in Economics from the Ourso College of Business at Louisiana State University (LSU), and graduated Magna Cum Laude with a Bachelor of Science in Economics from LSU, where he also minored Political Science and Business Administration.

Originally from New Orleans, Nial attended Holy Cross High School and the Louisiana School for Math, Science, and the Arts. In 2014, he was recognized as one of the top forty under 40 leaders in the community, and is alum of the Baton Rouge Leadership and Louisiana Leadership programs. Nial serves on the Southeast Super Region Committee, Greater New Orleans Inc.'s Next Gen Council, New Schools for Baton Rouge Board, Teach for America Board, and is Chairman of Louisiana Association of Business and Industry's Emerging Leaders Council. He has helped raised money for the American Cancer Society, Republican Governor's Association, and several elected officials. Nial currently resides in Baton Rouge.

Jason Frierson joined Cornerstone in February 2025 following his service as the United States Attorney for the District of Nevada since 2022. He was nominated by President Biden, acting as the Chief Federal Law Enforcement Officer for the District of Nevada, and the first African American to hold the position. In this role, Jason led a team of more than 100 prosecutors and staff professionals, including 55 attorneys who handled federal criminal, civil and appellate cases. In addition, he met regularly with local, state and federal law enforcement agency leaders, and other key community leaders and organizations to discuss investigations, current cases and developing trends.

Jason started his career representing the indigent, serving as a prosecutor of white-collar criminals and as an agency attorney in protecting child abuse victims. In 2010, he was elected to the Nevada State Assembly and was voted the best freshman Assemblyman in 2011. After being re-elected for the 2013 session, he served as Chairman of the Judiciary Committee.

After one term out of the legislature, Jason was elected to return to the Nevada Assembly in 2016 and was then selected in a bipartisan and unanimous vote to serve as the Assembly's first African American Speaker in Nevada history. He served in that role for three consecutive legislative sessions, leading one of the most diverse state legislatures in the country and the first female majority legislature in the country's history.

Prior to his legislative service, Jason served in a variety of significant legal roles in both the public and private sector. Jason holds a B.S. in Health Science from the University of Nevada and earned his Juris Doctorate from William S. Boyd School of Law, University of Nevada, Las Vegas.

Launched Cornerstone's 13th state office in South Carolina

Former Chief of Staff and Legal Counsel for the South Carolina House Ways and Means Committee

Regularly engaged in the highest-level budget and policy negotiations from within the innermost circles of Massachusetts state government

Worked closely with then-Chairman DeLeo to pass four state budgets, multiple bond bills and major pieces of legislation including health care reform and clean energy initiatives.

Responsible for shaping the House legislative agenda, overseeing its execution and strategically advising the Speaker through high-stakes negotiations

Works closely with all parties including the Senate President and Governor, majority and minority legislative leadership, chairs and cabinet officials.

Policy Advisor at Preti Strategies

Chief of Staff and Chief Policy Advisor to Speaker of the Massachusetts House of Representatives.

Chief of Staff and Press Secretary to House Committee on Ways and Means

Chief of Staff and Press Secretary to House Committee on Bills in the Third Reading

Education:

Suffolk Law School
Hamilton College
Belmont Hill
The Fessenden School

Helped lead $1.7B agency including management, budget, technology, procurement and legislative affairs at MBTA

Led multiple technology upgrades at MBTA that resulted in a significant leap forward innovation at the agency, also became very proficient in state procurement processes and rules

Helped develop and coordinate strategy to consolidate functions of six transportation departments as Legislative Director at MassDOT

Routinely worked with staff and vendors on hundreds of millions of dollars in road and bridge projects annually

Responsible for writing and tracking all legislation and budget matters for Asst. Minority Leader

Policy Advisor at Preti Strategies

Chief of Staff, Massachusetts Bay Transportation Authority

Legislative Director, MassDOT

Chief of Staff, Massachusetts Highway Department

Chief of Staff and Legislative Director, Assistant Minority Leader, Massachusetts Senate


Education:

University of Massachusetts

Martin Hubert brings a wealth of state government experience to the clients of Cornerstone Government Affairs. From his early career as chief counsel to the Senate Natural Resources Committee to his gubernatorial appointment as a commissioner of the Texas Commission on Environmental Quality to his eight years as the deputy comptroller of Texas, Hubert has managed thousands of employees and millions of taxpayer dollars under both Democrat and Republican administrations.

Martin was the 2008 recipient of TSABAA's Administrator of the Year Award. Presented annually, this prestigious award was established to formally recognize state employees who have demonstrated outstanding leadership skills and who have made significant contributions to state agency business administration.

As the final general counsel to legendary Lt. Governor Bob Bullock, Martin learned the mastery of government relations from some of the most influential leaders in Texas history. His knowledge of agriculture stems from generations of the Hubert family's cow/calf and farming operations in South Texas and serving as the Texas Deputy Commissioner of Agriculture for eight years. Martin offers a unique combination of legal, natural resources, tax policy and state government procedural expertise.

Hubert is a graduate of the Georgetown University Law Center and St. Mary's School of Law. He was Brigade Executive Officer in the Corps of Cadets at Texas A&M University, where he was a member of the Ross Volunteers Honor Guard and the Singing Cadets. He successfully completed Army Ranger School and served in the U.S. Army Reserves. He is a marathon runner and coaches his son's little league teams.

Hubert is a second tenor and helps raise money for Legal Aid through the Travis County Bar Association's "Bar and Grill" fundraisers. He and his wife Celeste live in a historic home in Austin, where they are involved with the Austin Symphony, St. Theresa's Catholic Church and School, and the happily busy lives of their children Belle and Patrick.

Tony Essalih joined Cornerstone in 2011 as a co-lead of the firm's flagship Texas office in Houston. He spent 12 years on Capitol Hill and came to Cornerstone from the office of Congressman John Culberson (R-Houston). Tony worked for Congressman Culberson for 10 years, the last five as his chief of staff. Prior to becoming chief of staff, Tony served in a variety of capacities including legislative assistant, legislative director, communications director, and deputy chief of staff. He spent eight years in Washington, D.C. before relocating to Houston in 2007.

As chief of staff, Tony was responsible for guiding the day-to-day operations of the Congressman's Washington and Houston offices, and oversaw a 15-member staff under a fixed budget. Outside of the office, he served as the principal liaison to the Congressman's campaign committee and provided strategic counsel and advice related to his re-election efforts. Tony's areas of policy expertise include transportation, energy, budget and appropriations. Tony also led outreach efforts and served as an emissary on behalf of the Congressman with state lawmakers in Austin and local elected officials in Houston.

Prior to Culberson's election in 2001, Tony worked as a legislative assistant for Congressman Culberson's predecessor, former House Ways and Means Committee Chairman Bill Archer. Tony's began his tenure on Capitol Hill with former House Natural Resources Committee Chairman Doc Hastings.

Tony has advised and assisted numerous local, state, and federal campaigns. He serves on the board of the National InterFaith Foundation, the Advisory Board for the Houston Technology Center, spent two years on the Board of the Spring Branch Medical Center and was a member of Houston Mayor Annise Parker's transition team in 2010.

Tony was born and raised in Fredericksburg, VA and received his B.A. in Political Science from Mary Washington College. He was a member of Mary Washington's NCAA semifinalist men's soccer team. He lives in Houston and has two angelic daughters, Grace and Libby.

Alisa Nave-Worth joined Cornerstone in January 2025 following her time as CEO of Alisa Nave Consulting. With over a decade of experience in politics and government affairs, she brings unparalleled expertise in Nevada's legal, political and public policy matters. She leverages her deep understanding of the legislative process and strong relationships with lawmakers and regulators to craft and advocate for legislative strategies that benefit a diverse array of corporate clients.

Known for her integrity and commitment, Alisa has built a reputation as a trusted advisor in the Nevada political landscape. Additionally, she previously opened the Las Vegas offices at different times for two of the largest law and lobbying firms in the country. Alisa specializes in addressing legislative, regulatory and administrative issues, focusing on transportation, construction, emerging financial technologies, entertainment, infrastructure and campaign finance compliance. She has successfully represented clients before the Nevada Legislature and state agencies, guiding them through complex rule-making and regulatory matters.

A seasoned campaign consultant, Alisa has worked on Presidential campaigns, where she spearheaded grassroots initiatives and built influential political coalitions across Nevada. As the Executive Director to the Nevada Senate Caucus, she developed and implemented political and communications strategies, enabling the passage of critical legislation across sectors such as transportation, energy, taxation, gaming and education.

Alisa holds a B.A. in Russian Language and Literature and Public Policy Studies from Duke University and earned her Juris Doctorate from Berkeley Law School, UC Berkeley. Licensed to practice law in Nevada and California, she is a member of the Clark County Bar Association and the Nevada State Bar Association.

Max Moll joined the Cornerstone Public Affairs team April of 2023, bringing a public affairs and strategic communications presence to Cornerstone's Texas offices. In his previous role as chief engagement officer at the Houston Independent School District, he oversaw government relations, communications, family and community engagement and board relations for the nation's eighth largest school district. He also oversaw the district's legislative affairs work and external lobby team, ensuring alignment and execution of district's legislative priorities. In addition, he represented the district with external stakeholders, in traditional and digital media appearances, and on panels and other various speaking opportunities. He was also the lead spokesperson for the district and main point of contact for elected officials, advocacy groups and private industry.

Prior to working at HISD, Max served as the chief communications officer & deputy director for the Office of the Houston City Controller, Chris B. Brown. He spearheaded all communications initiatives for the Office of the City Controller, working across the City of Houston's 22 departments to help unify external and internal communications. Max served as liaison between Controller's Office and the city's investors, developing key external messaging relating to investment strategy, portfolio performance, and maintaining key relationships with city's investor base. In addition, and in partnership with the Controller's Office Treasury Division, Max helped oversee the city's Environmental, Social, and Governance (ESG) investments, helping grow the portfolio to over $950 million.

Max also served as the chief of staff to the CEO of the Houston Hispanic Chamber of Commerce, where he oversaw the development and execution of the Chamber's public affairs and community outreach efforts, legislative advocacy campaigns and external affairs projects. Also, he served as the main point of contact for media, securing comprehensive coverage and managing all media relationships on behalf of the Chamber and its members.

He holds a master's in business administration from Boston University, master's in political management from George Washington University, and a bachelor's in mass communication from LSU.

6-10 years

Brian serves as a senior vice president for McGuireWoods Consulting's state government affairs group in Columbia, South Carolina. Brian represents clients before the state legislature, local governments and executive branch agencies.

Representing a diverse group of clients on a range of issues including energy, transportation, education, alcohol, retail and non-profit advocacy, Brian has helped pass legislation related to emerging transportation, alcoholic beverage control laws and the energy industry. He has extensive experience in developing and implementing comprehensive government, grassroots and public affairs strategies for his clients.

Prior to joining McGuireWoods Consulting, Brian worked on a number of political and grassroots campaigns, and worked for Congressman Joe Wilson in his district office. Upon graduation from The Citadel, Brian took a commission in the Army as a Military Intelligence Officer. In 2010, he was deployed to Afghanistan with the 1-178th Field Artillery Battalion and served as the unit's Tactical Intelligence Officer. He is currently a Captain in the South Carolina Army National Guard and serves as the legislative liaison.

Brian lives in Columbia with his wife, where they are raising their two daughters.

Anne Mazuca brings over a decade of legislative experience working at the Texas Capitol, most recently serving six years as Chief of Staff to State Representative R.D. ‘Bobby' Guerra.

During her time working in the Texas legislature, she has worked for Members from Dallas, Galveston and South Texas, allowing her the opportunity to build relationships with local elected officials, community leaders and stakeholders from across the state while working on a wide range of policy areas. Prior to being named chief of staff, she served as a legislative director and legislative aide where she was the primary staff lead for the House Appropriations Committee Article II and Article III focusing on healthcare and education funding, the Public Health Committee, Energy Resources, Business & Industry, Ways & Means and Insurance committees.

In her capacity as chief of staff, Anne was responsible for guiding the day-to-day operations of the Capitol and McAllen offices. Outside of the office, she provided support for her Member's re-election campaign where she provided feedback on messaging, managed all Texas Ethics Commission and campaign finance filings and offered general advice and assistance related to his campaign.

An Austin native, Anne has close ties to the city in which she still resides.

Justin R. Jordan is an award-winning political advisor and a vice president at Cornerstone Government Affairs. Justin specializes in federal and state government relations, and communications.

For more than 14 years, Justin has been involved in guiding congressional, state legislature, judicial, mayoral, city council, county executive and school board campaigns and advising clients and elected officials. His unique background offers his clients an integrated approach to solutions that help them navigate the political arena. In addition to his work with a range of Cornerstone clients in the state of Texas, he also has experience working on behalf of foreign governments.

Prior to joining Cornerstone, Justin founded Patriot Group Strategies, a consulting firm specializing in strategy, marketing and fundraising. Over the years, he developed a niche of reaching constituency's through the use of unconventional and innovative communication strategies. His entrepreneurial know-how positions him as a national leader in providing strategic advice in an array of political issues including, but not limited to diplomatic relations, pensions, and cyber security.

He has served as a deputy field coordinator for the National Republican Congressional Committee, chairman of the Texas Federation of College Republicans and Executive Director for the watchdog organization, Texans for Ethics and Accountability.

Justin is a member of the Houston Airport System Development Corporation.

Rachel Farmer has 20 years of experience in government affairs activities including, policy development, executive branch engagement, drafting legislation, grassroots activities and political campaign strategies. She has extensive knowledge of health care related issues, state budget and capital outlay processes and economic development business incentives. She joined Cornerstone's in October 2022 and serves as a principal in the Baton Rouge office.

Rachel came to Cornerstone from UnitedHealth Group, where she served as vice president of external affairs and managed the development and implementation of political strategy, relationship development, public policy engagement and overall business advancement initiatives with key state and local policy makers. Additionally, she was responsible for directing all executive and legislative lobbying activities for three state territory, including establishing and overseeing all PAC and corporate political contributions and managing government affairs consultants in each state.

Prior to that, she was a legislative and congressional liaison to Secretary Stephen Moret with the Louisiana Department of Economic Development (LED). She reported directly to the Secretary and served as the primary contact for all legislative communication on behalf of LED, assisting the Secretary in the development of strategies and legislative initiatives to further enhance Louisiana's business development efforts.

Rachel also served as the director of governmental relations with Associated Builders and Contractors (ABC), where she led legislative and political activities for ABC Louisiana, provided lobbying services and actively tracked legislation and regulation issues of importance to ABC. She has experience working with the Louisiana Division of Administration and the House of Representatives serving as a confidential assistant and legislative analyst, respectively.

Rachel holds a Bachelor of Science with a major in business administration and a minor in political science from Louisiana State University.

6-10 years

Jeffrey L. Barnhart joined McGuireWoods Consulting in October 2011 as a senior vice president of State Government Relations. He works out of the firm's Raleigh office assisting clients and helping the firm grow its national and multistate practice in the southeast.Representing Cabarrus County, Jeff served 11 years in the North Carolina General Assembly before relinquishing his seat in 2011. He was most recently co-chair of the House Appropriations Committee and was a strong healthcare proponent earning numerous recognitions from many organizations. Before his tenure as a House Representative, Jeff served as a Cabarrus County Commissioner for 10 years. He was also acting County Manager for Cabarrus for eight months and served on the county's Water & Service Authority (six years) and Economic Development Board of Directors (nine years).In addition to his strong local and state public sector experience, Jeff is a former small business owner who possesses significant private sector experience. He recently spent three years at the helm of a local healthcare center and also worked at IBM for 10 years in a number of different capacities from engineering to marketing to management. He is ranked the 13th Most Influential Lobbyist of the 2013 Legislative Session by the North Carolina Center for Public Policy Research in its annual survey of lobbyists, legislators and Capitol Press Corps members.Jeff served in the United States Air Force from 1978 to 1982 working in Communications Security.