A joint resolution proposing an amendment to the Constitution of the United States to require that the Supreme Court of the United States be composed of nine justices.

This joint resolution proposes an amendment to the U.S. Constitution that would permanently fix the number of Supreme Court justices at nine. While the Constitution establishes the Supreme Court, it does not specify the number of members, leaving that decision to Congress, which has changed the size of the Court several times throughout American history. If passed by two-thirds of both chambers of Congress and ratified by three-fourths of the states, this amendment would prevent future Congresses from increasing or decreasing the number of justices through ordinary legislation.