President Donald Trump has repeatedly mused about firing Federal Reserve Chair Jerome Powell and, ahead of a visit to the U.S. central bank's headquarters on Thursday, called him a numbskull for not cutting U.

The president has lambasted the U.S. central bank chief repeatedly for not cutting interest rates more aggressively, musing publicly about firing him.

President Donald Trump's contemplation of firing Federal Reserve Chair Jerome Powell over interest rate disagreements threatens to challenge the legal boundaries of historical Fed independence. The Federal Reserve Act's unclear definition of 'cause' for removal of board members could lead to unprecedented legal confrontations and implications for the central bank's autonomy.