It took less than a month for a case from Donald Trump’s second presidential term to reach the Supreme Court. The administration’s appeal stems from Trump’s attempt to fire a top government watchdog in a dispute that implicates longstanding precedent that protects independent federal agencies.

President Donald Trump has expounded an extraordinary vision of his authority over the past month, relying on the Supreme Court’s decision last year granting him immunity from criminal prosecution, as a blank check in his broader drive for power.

The filing amounts to a challenge to a foundational precedent that said Congress can limit the president’s power to fire leaders of independent agencies.