U.S. Senators Endorsing Supreme Court Expansion

This list identifies current U.S. Senators who have publicly supported expanding the Supreme Court.
Click on the highlighted senators' names to be taken to their Bluesky profiles and the links to view the sources documenting that support.
If an endorsement is missing, please use the Contact form to submit the senator's name and a link to the supporting source.

Last updated: August 24, 2026

California

Adam Schiff, Sen. Schiff Launches Push for Judicial Reforms, Increased Transparency Amid Historic Democratic Rollbacks by Supreme Court, Adam Schiff Press Release (July 20, 2026)

Hawaii

Mazie Hirono, Mazie Hirono Says Packing Supreme Court Is ‘Long-Overdue Court Reform’, by Anthony Leonardi (September 22, 2020)

Massachusetts

Ed Markey, Sen. Markey, Rep. Johnson Announce Legislation to Expand Supreme Court, Restore its Legitimacy, Alongside Sen. Smith, Reps. Bush and Schiff, Ed Markey Press Release (May 16, 2023)

Elizabeth Warren, Senator Warren Calls for Supreme Court Expansion to Protect Democracy and Restore Independent Judiciary, Elizabeth Warren Press Release (December 15, 2021)

Minnesota

Tina Smith, U.S. Senator Tina Smith Becomes First Cosponsor of Bill to Expand the U.S. Supreme Court, Tina Smith Press Release (September 29, 2021)

Oregon

Ron Wyden, Wyden Introduces Sweeping Court Reforms to Restore Public Trust as Supreme Court Faces Legitimacy Crisis, Ron Wyden Press Release (September 26, 2024)