The court barred the state from using a redrawn congressional map favoring Republicans ahead of November's elections, a setback for the president's party.
The ruling deals a setback to Republican efforts to gain an edge in the House through redistricting ahead of the midterm elections.
The court ended a long-running legal dispute by ruling the Republican-favored map cannot be used in November, as absentee voting is already under way, according to The Guardian.
An appeals panel said Missouri should use the Republican-drawn districts, while the Supreme Court has separately blocked them from the November election.
Opponents requested an emergency filing after a federal panel let the new congressional map stand, according to The Guardian.
A federal judge blocked use of Missouri's old congressional districts while the U.S. Supreme Court denied a request to use a new Republican-favored map, creating uncertainty less than two months before November's elections.
The court declined to intervene in Missouri's redistricting dispute, allowing the state supreme court ruling requiring voter approval of new districts to stand.
The court left in place a state ruling that blocked new district lines from taking effect before the November midterms, dealing a setback to Republicans’ national redistricting push.
An article in Scientific American examines how mathematical and geometric analysis can reveal when voting districts have been drawn to favor one political party.