U.S. District Judge Susan Illston, an appointee of former President Bill Clinton, blocked any mass “reductions in force” for two weeks at federal agencies, siding with federal worker unions, nonprofits, and local governments who contended the abrupt firings were illegal. The White House said it wants to fire workers ASAP.

The Trump administration is indefinitely barred from issuing or finalizing widespread layoffs at most major federal agencies after a judge late Thursday night issued a preliminary injunction finding the president likely acted outside his legal and constitutional powers.

The Trump administration asked the Supreme Court on Friday to reverse a lower court order that has blocked mass firings and major reorganizations at federal agencies, a case that could have enormous consequences on President Donald Trump’s ability to reshape the federal government.