President Donald Trump on Thursday again made clear his disdain for Federal Reserve Chair Jerome Powell, going so far as to say the central banker’s “termination can’t come fast enough” and saying in an Oval Office event that Powell will “be out of there real fast” if he wants.

The developments are occurring against a backdrop of wider turmoil in the economy and financial markets, brought on by Trump’s sweeping taxes on imports. Most economists worry that an assault on the Fed’s longstanding independence from politics would further disrupt markets and add to the uncertainty enveloping the economy.