Pulte posted a copy of the letter to social media on Wednesday morning. In response, Trump has called on Cook to step aside.

The surprise early resignation of former Fed Governor Adriana Kugler, another Biden pick, gives Trump an early opening to nominate someone to the central bank’s board and steer its monetary policy trajectory more toward his preferred path. He has named one of his economic aides, Stephen Miran, to fill the slot on an interim basis.