Senate Republicans propose constitutional amendment locking Supreme Court at nine justices

What it does

This joint resolution proposes a constitutional amendment to lock the Supreme Court's size at nine justices. If ratified by three-fourths of the states, it would prevent Congress from ever changing the Court's composition—a direct response to Democratic proposals to expand the Court to 13 or more seats. The amendment benefits those who want to preserve the current Court's ideological balance and blocks future majorities from altering it.

Why we flagged it

This is a straightforward constitutional amendment proposal with no hidden mechanisms. It does exactly one thing: propose a constitutional amendment fixing the Supreme Court at nine justices. The bill is transparent about its purpose and mechanism.

What the text implies

• If ratified, this amendment would entrench the current Court's ideological composition against future reform, making it constitutionally impossible for any future Congress to expand the Court regardless of political circumstances or institutional crises.
• The amendment creates an asymmetry: it prevents expansion but does not prevent contraction, meaning a future Congress could theoretically reduce the Court to fewer justices without violating the amendment (which only sets a floor, not a ceiling).
• Passage would effectively end the decades-long debate over Court-packing as a legislative option, removing it from the toolkit of democratic reform even if future majorities believe the Court has become unaccountable or ideologically captured.

Section numbers refer to the bill text the analysis read — linked under Primary records below.

Who it affects

The amendment restricts democratic power: it removes the ability of future majorities to reform the Court through legislation, a core democratic prerogative. However, it also protects against destabilizing institutional changes and preserves institutional stability. The trade-off between democratic flexibility and institutional constraint is genuine and contested.

Named in the bill

Supreme Court of the United States, U.S. Senate, Senate Committee on the Judiciary

Where it stands

22 cosponsors: 22 Republicans.

• Feb 6, 2025 — Introduced · Congress.gov: “Introduced in Senate”
• Feb 6, 2025 — Referred to Senate Committee on the Judiciary · Congress.gov: “Read twice and referred to the Committee on the Judiciary”

Dates and quoted wording are Congress.gov's action record; the timeline shows status changes, not every procedural step.