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ean McLean is a Republican consultant, policy strategist, and government affairs expert with nearly 20 years of experience shaping federal legislation, regulatory strategy, and political risk in Washington, D.C.

He has held senior roles across both the Executive and Legislative branches—including in the Trump White House, at the U.S. Department of Commerce, and as Legislative Director to both Senator Ted Cruz and then-Representative Marsha Blackburn.

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In those roles, Sean managed large policy teams and led strategic initiatives across the Senate Commerce, Judiciary, and Foreign Relations Committees, as well as the House Energy and Commerce Committee. He played a central role in advancing legislative priorities on issues including telecommunications, energy, health care, technology, and national security. He also led the drafting and advancement of key legislation such as the 2015 Commercial Space Launch Competitiveness Act and the 2017 NASA reauthorization—securing bipartisan support for high-impact space and innovation policy reforms.

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Sean has helped shape U.S. policy on artificial intelligence (AI), spectrum policy, internet governance, energy innovation, space commercialization, and U.S. manufacturing. He brings deep expertise in federal policymaking related to aerospace, telecommunications, defense, and emerging technologies, and regularly advises clients on navigating agency regulations, appropriations, and congressional action.

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He also brings significant experience in congressional oversight and the Senate confirmations process, having supported numerous high-profile investigations and nominations. His oversight work has included inquiries into the Solyndra loan guarantee program, Big Tech’s influence on public discourse, federal internet governance, and U.S. engagement with China-linked companies. This experience provides unique insight into how congressional investigations unfold and how companies can manage reputational, regulatory, and political risk in a rapidly evolving environment.

As the Founder of Origin Advocacy, a Washington, D.C.–based government affairs firm, Sean advises Fortune 500 companies, high-growth startups, and trade associations on how to impact legislation, secure federal funding, and shape policy outcomes in sectors such as AI, space, aviation, national security, and energy. He is widely recognized for his strategic access, bipartisan credibility, and ability to turn complex policy dynamics into actionable client wins.