WASHINGTON — The Trump administration asked the Supreme Court on Monday to halt a ruling ordering the rehiring of thousands of federal workers let go in mass firings aimed at dramatically downsizing the federal government.

The emergency appeal argues that the judge can’t force the executive branch to rehire some 16,000 probationary employees.

It also calls on the conservative-majority court to rein in the growing number of federal judges who have slowed President Donald Trump’s sweeping agenda, at least for now, by finding that his administration hasn’t followed federal law.

The order came from U.S. District Judge William Alsup in San Francisco, who found the firings didn’t follow federal law and required immediate offers of reinstatement be sent.

The agencies include the departments of Veterans Affairs, Agriculture, Defense, Energy, the Interior and the Treasury.

The temporary restraining order came in a lawsuit filed by a coalition of labor unions and organizations as the Republican administration moves to reduce the federal workforce.

Alsup expressed frustration with what he called the government’s attempt to sidestep laws and regulations governing a reduction in its workforce — which it is allowed to do — by firing probationary workers who lack protections and cannot appeal.

The case is among multiple lawsuits challenging the mass firings, and a second judge also ordered the rehiring of thousands of probationary workers the same day.