Kevin Warsh was sworn in as chair of the Federal Reserve for a four-year term on Friday, as financial markets watch US monetary policy amid persistent inflation pressures.

The swearing-in ceremony, held by US President Trump at the White House East Room, was attended by senior government officials, lawmakers, Supreme Court justices and business leaders, with Justice Clarence Thomas administering the oath of office.

"I want Kevin to be totally independent. I want him to be independent and just do a great job," Trump said. "Don't look at me, don't look at anybody. Just do your own thing and do a great job, okay?" he said.

Warsh is the first Fed chair to be sworn in at the White House since Alan Greenspan in 1987, according to CNBC.

Warsh, 56, succeeds Jerome Powell and becomes the 17th chair of the Federal Reserve. Powell, who has led the central bank since 2018, said he would remain on the Fed's Board of Governors after stepping down as chair.