We still don't know exactly what the standard is for the president to fire a Fed governor or how he can legally do so.

Trump first tried to fire Cook last year, alleging issues with her personal mortgage, which she denies.

No president has attempted such a firing in the Fed's more than century-long history...

The Fed got a rare shield from the court.

By Greg Robb and Robert Schroeder

The Supreme Court has taken a significant stand for the Federal Reserve's independence, rejecting President Trump's unusual effort to remove Governor Lisa Cook. The ruling…