Manning McPhillips

( Mississippi )

Subjects: All Subjects

Introduction

Leads federal and state advocacy efforts for clients from the firm's Jackson office

Former chief of federal affairs and strategic priorities at the Mississippi Development Authority

Clients

1) ACT Education Corp.

2) C Spire

3) Canopy Children's Solutions

4) Cornerstone Government Affairs

5) Covington County Hospital

6) DeSoto County Regional Utility Authority

7) Empower MS

8) Entergy Mississippi, LLC.

9) Great City Mississippi Foundation

10) Horn Lake Creek Basin Interceptor Sewer District

11) Jackson County Board of Supervisors

12) Magee General Hospital

13) Mississippi Association of Health Plans

14) Mississippi Business Alliance

15) Mississippi Destination Marketing Organization Association

16) Mississippi Farm Bureau Casualty Insurance Company

17) Mississippi Farm Bureau Federation

18) Mississippi Railroad Association

19) PANOLA PARTNERSHIP, INC.

20) Simpson General Hospital

21) Yellow Creek State Inland Port Authority

Biography

Manning joined Cornerstone in May of 2023 following his time at Watkins & Eager PLLC, where he served as a Government Affairs Advisor. Based in Jackson, Manning supports clients at the state and federal level, specifically with infrastructure, community development, public safety, workforce development, Corps of Engineers and other issues areas.

In his previous role, he helped secure state appropriations for projects and pursued federal earmark requests, successfully advocating for tens of millions of dollars for clients. Additionally, he worked on a variety of issues including tax policy, business regulations, and federal and state regulatory approval for complex, large scale projects.

Prior to this, Manning held different roles with the Mississippi Development Authority (MDA), his last one being the Chief of Federal Affairs and Strategic Priorities, where he worked directly with the governor and his staff to support economic development. Manning was a member of the executive committee of the state's lead economic and community development agency advancing the state's priorities on a variety of federal issues including aerospace, military spending and base/mission realignment, infrastructure and defense sector recruitment.

While at the MDA he also directed the activities of six division directors with a wide variety of responsibilities from strategic policy development, community development and federal regulatory compliance, in addition to coordinating the inter-governmental affairs of the agency, including working closely with the Office of the Governor, statewide elected officials, other state executive agencies, the state legislature and the federal Congressional delegation.

Manning holds a bachelor's degree from the University of Mississippi.

Last Updated: January 04, 2026