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.

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.