Donald Trump renews threat to fire Federal Reserve chief Jay Powell
US president insists Justice Department will not drop criminal probe into central bank chair
US president insists Justice Department will not drop criminal probe into central bank chair

Central bank chair’s decision to confront the president has bolstered the institution’s independence

Current and former officials view the US president’s widening assault on the central bank with alarm

President’s remarks come after judge called the investigation an attempt to coerce Fed chair to lower interest rates

President calls Jay Powell a ‘stubborn ox’ in latest attack on current US central bank chief

President has said he will seek to fire the head of the central bank if Kevin Warsh is not confirmed before May 15

Clash with central bank chief comes during tour of $2.5bn renovation project of institution’s headquarters