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Mary Guenther

Head of Space Policy

Mary Guenther is the Head of Space Policy at the Progressive Policy Institute. In this role, Mary focuses on evaluating and developing policy solutions that address how the United States government’s relationship with space actors should evolve and how to best harness the benefits of space for people here on Earth.

Prior to joining PPI, Mary served as the Vice President of Space Policy at the Commercial Space Federation (CSF). In that role, Mary drove consensus on space policy issues amongst roughly 90 member companies representing various facets of the commercial space economy and engaged with lawmakers, executive agencies, and the public to get those policy solutions implemented. 

Prior to CSF, Mary served as a Professional Staff Member at the United States Senate Committee on Commerce, Science, and Transportation focusing on space, science, emerging technology, cybersecurity, and manufacturing policy. In that role, she worked with colleagues to author and pass through the Senate the CHIPS and Science Act as well as a variety of smaller pieces of legislation.

Recent Work

Press Release  |  January 15, 2026

PPI Applauds Bipartisan Satellite Streamlining Bill to Strengthen America’s Edge in Space

  • Mary Guenther
Press Release  |  January 8, 2026

PPI Celebrates Commerce Department Proposal on Mission Authorization and Offers Suggestions for Improvement and Implementation

  • Mary Guenther
Publication  |  January 8, 2026

PPI’s Filing with the Department of Commerce’s Office of Space Commerce Regarding the Draft Mission Authorization Proposal

  • Mary Guenther
Press Release  |  December 18, 2025

New PPI Analysis Examines Strengths and Shortcomings in 2026 Defense Authorization Bill

  • Mary Guenther Tamar Jacoby Peter Juul Justin Littleford
Publication  |  December 17, 2025

Inching in the Right Direction: The Good, the Bad, and the Ugly in the NDAA

  • Mary Guenther Tamar Jacoby Peter Juul Justin Littleford
Op-Ed  |  December 16, 2025

Guenther for Space News: Trump’s National Security Strategy Ignores Space

  • Mary Guenther
Press Release  |  December 3, 2025

EU Space Act Hurts EU and US Space Sectors While Sparing China, New Analysis Finds

  • Mary Guenther
Publication  |  December 3, 2025

Analysis: EU Space Act Weakens Europe and the United States

  • Mary Guenther
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