David Frum writes:

Sometime before June 29, 2020, the U.S. Supreme Court will either plunge the United States into the severest constitutional crisis of the Trump years—or save Americans from that crisis.

Three different committees of Congress, as well as New York State prosecutors, have issued subpoenas to President Donald Trump’s accountants and bankers for his tax and business records. Trump has sued to stop the accountants and bankers from complying. He has lost twice at the district-court level and twice at the appeals-court level. Now he is looking to the conservative majority on the Supreme Court to rescue him.

On March 31, the court will hear oral arguments in the cases of Trump v. Mazars and Trump v. Deutsche Bank. The decision will be rendered sometime between then and the court’s summer break.

Although Trump is suing his accountants and his bankers as a private citizen, his case has been joined by the Department of Justice. Solicitor General Noel Francisco has signed an amicus brief on behalf of the United States. It is an astonishing document. It invites the Supreme Court to junk two centuries of precedent—and to substitute an entirely new system of judicial review of congressional subpoenas that involve a president. [Continue reading…]