House Speaker Mike Johnson announced the chamber will vote on a constitutional amendment that would permanently cap the Supreme Court at nine justices, a direct counter to Democratic proposals to expand the bench and dilute its current conservative majority.
Johnson revealed the plan during a press conference on Tuesday, framing the measure as a safeguard for judicial independence. The amendment would require two-thirds approval in both the House and Senate, then ratification by three-fourths of state legislatures, before it could take effect.
The Supreme Court has operated with nine justices since 1869, but no provision in the Constitution actually fixes that number. Congress has changed the size of the Court seven times throughout American history. That legal flexibility is precisely what concerns conservatives today.
Democrats, led in previous sessions by figures such as Sen. Ed Markey and Rep. Hank Johnson, have introduced legislation to add four seats to the Court, which would bring the total to thirteen. Those efforts gained renewed attention after the Court's rightward shift following three appointments by President Trump. Progressives have openly described expansion as a way to rebalance the bench.
Speaker Johnson cast the amendment as a firewall against that strategy. As Just the News reported, Johnson told reporters the vote would send a clear message that the judiciary should not be manipulated for partisan advantage.
"We are going to bring a constitutional amendment to the floor of the House to establish that the Supreme Court of the United States shall be composed of nine justices."
Johnson added that the move reflects what he called a "core principle" for House Republicans: that the independence of the judiciary must be preserved against political interference.
Passing a constitutional amendment is deliberately difficult. The resolution needs a two-thirds supermajority in both chambers, meaning Johnson would need significant Democratic support in the House and even steeper cooperation in the Senate. After that, 38 of 50 state legislatures would have to ratify.
Republicans hold a narrow House majority. In the Senate, they hold 53 seats. Neither margin comes close to the threshold required. That political reality makes passage an uphill climb, but supporters argue the vote itself carries strategic value by forcing lawmakers to go on the record.
Rep. Dusty Johnson of South Dakota, who has backed a similar proposal in past sessions, said the vote puts every member of Congress in a clear position.
"The American people deserve to know where their representatives stand on protecting the Supreme Court from political manipulation."
Democratic leaders have shown no appetite for locking in the current Court composition. Progressive groups have argued that the Court's 6-3 conservative tilt resulted from what they view as procedural manipulation, pointing to the Senate's refusal to hold hearings for Merrick Garland in 2016 and the rapid confirmation of Amy Coney Barrett in 2020.
Court-expansion advocates contend that adding seats would restore balance rather than undermine it. That argument has not gained traction with the broader public. Polling has consistently shown that a majority of Americans oppose expanding the Court, though support runs higher among self-identified Democrats.
The White House has not issued a formal position on the amendment. President Biden, during his term, formed a commission to study Supreme Court reform, but that body stopped short of recommending expansion. The current administration has not revived the issue in any formal capacity.
Critics will dismiss the effort as messaging. The amendment almost certainly lacks the votes to clear Congress, let alone reach the ratification stage. But Johnson and his allies see the vote as more than theater.
By scheduling floor action, the Speaker forces a recorded vote that can be used in campaign advertising and donor communications. Any Democrat who votes against capping the Court at nine hands Republican challengers a ready-made attack line. Any Democrat who votes in favor risks backlash from the progressive base.
The timing also matters. With the Supreme Court expected to hand down major decisions this term on presidential power, administrative authority, and social policy, public attention on the Court is already elevated. Johnson's move keeps the judiciary at the center of the Republican message: that conservatives are defending institutions while progressives seek to reshape them.
The original Judiciary Act of 1789 set the Court at six justices. Congress changed the number repeatedly during the 19th century, sometimes for political reasons. President Franklin Roosevelt's infamous 1937 court-packing plan, which sought to add up to six justices, failed in Congress but pressured the Court into upholding New Deal legislation. The episode remains the most prominent example of a president trying to reshape the bench through expansion.
Since 1869, the nine-justice norm has held through custom, not constitutional command. Johnson's amendment would convert that custom into binding law, removing future Congresses' ability to alter the Court's size through ordinary legislation.
Supporters say that permanence is the point. Without a constitutional cap, any future trifecta government could pack the Court with a simple statute. The amendment would take that option off the table for good, regardless of which party holds power.
Johnson has not announced a specific date for the floor vote but indicated it will come in the current session. House Rules Committee action would need to precede the vote, and leadership will likely whip Republican members to ensure near-unanimous support on their side of the aisle.
Even if the resolution passes the House, Senate Majority Leader John Thune has not committed to bringing it to the floor in the upper chamber. Senate rules and the filibuster do not apply to constitutional amendments in the same way they apply to legislation, but securing 67 votes remains a formidable barrier.
Advocates for the amendment acknowledge the odds. Their argument is longer-term: that repeated votes build a political norm, create a paper trail, and make court-packing politically toxic for anyone who opposes the cap.
When the gavel falls on this vote, every member of Congress will answer a simple question: should the Supreme Court stay at nine, or should the door stay open for the next party in power to stack the bench? The answer will follow them home to their districts.
