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 case involves major constitutional questions about presidential power—but its unusual posture could make it a dud.

A month into President Donald Trump’s second term, lawyers for the Republican administration seem intent on provoking a legal fight to overturn a 90-year-old Supreme Court decision known as Humphrey’s Executor.