The Supreme Court on Monday rejected the Trump administration’s push to force California to set aside thousands of ballots from people the federal government claims are noncitizens, a decision that came hours before the final day of voting in the pivotal midterm elections.

The high court refused to immediately intervene in a case involving 20,000 people the Republican administration flagged as likely noncitizens on the largely Democratic state’s voter rolls.

The swift rejection capped a string of losses for the president’s effort to intervene in the election before the counting of ballots to decide who controls Congress in the last two years of his second term. No justices publicly dissented.