President Donald Trump has overseen the White House swearing-in of the new Federal Reserve chair. Trump said Friday that he'd like Kevin Warsh’s help in stimulating the economy even as the president tried to emphasize that the nation’s central bank would remain independent.

Never before has a chair of the US Federal Reserve been so controversial. Who is Kevin Warsh? Can he preserve the Fed's independence, or will he become Donald Trump's puppet?

Never before has a chair of the US Federal Reserve been so controversial. Who is Kevin Warsh? Can he preserve the Fed's independence, or will he become Donald Trump's puppet?

Warsh is replacing Jerome Powell as head of the central bank after the Senate confirmed the Trump appointee in a 54-45 vote last week.