President Donald Trump has looked to the marble finishes and hefty price tag of the Federal Reserve headquarters to claim grounds to fire Chair Jerome Powell, with whom he has tussled for years over interest rates.

The White House uses an overbudget renovation of Fed headquarters to pressure Fed Chair Powell out of his job. Will it work? And does it even matter?

The Fed's architects said the central bank wanted glass walls, but three Trump appointees felt marble best fit the building's historic character.