State Impacts of the One Big Beautiful Bill Act of 2025
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Billy Culleton

Assistant Vice President

Billy Culleton serves as Assistant Vice President of Strategic Government Relations and has been with the firm since 2017. In his role, Billy advises clients on state government relations strategy, including developing lobbying collateral, managing contract lobbyists, and coordinating engagements with third-party stakeholders. Billy primarily oversees clients in the energy, electricity, commercial real estate, retail, professional services, and technology spaces.

Since arriving at MultiState, Billy has played an active role in executing clients’ policy goals in state policymaker groups like the American Legislative Exchange Council (ALEC), RLSC, GOPAC, National Conference of State Legislatures (NCSL), and the Council of State Governments (CSG). In addition, Billy has directly advocated for clients in statehouses and in the U.S. Congress.

Prior to working at MultiState, Billy served as State Outreach Associate at the Mercatus Center at George Mason University, where he managed external relations with state legislators, governors' staff, and other policy stakeholders. He holds a Bachelor of Science in economics from George Mason University and a Master of Public Policy from George Mason University's Schar School of Policy and Government. Outside of his role at MultiState, Billy helps lead a ministry team at the Church of the Advent in Washington D.C., and is an active member of the National Capital Velo Club (NCVC). Billy lives in Washington, D.C., with his wife, Katie. 

Education

  • Master of Public Policy, Schar School of Policy and Government at George Mason University
  • B.S., Economics, George Mason University


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Working in state policy forces you to think creatively and customize advocacy strategies to accomplish your client's goals."
Billy Culleton
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