President Donald Trump on Wednesday appeared to escalate his attacks on Federal Reserve Chair Jerome Powell, a step investor call dangerous.

Federal Reserve Gov. Christopher Waller on Thursday called for the central bank to cut interest rates in July. Waller said

The case for a U.S. interest rate cut remains unresolved as Federal Reserve officials head into their policy meeting later this month, with data showing fresh signs of higher inflation and President Donald Trump intensifying his demands for lower borrowing costs.

If President Donald Trump takes the unprecedented step of trying to fire Fed Chairman Jerome Powell, the effort would roil markets and likely be met with pushback in the courts. Trump and the Trump administration have increasingly turned their fire on Powell and his leadership of the central bank.

Russell T. Vought, the head of the Office of Management and Budget, said he and other administration officials wanted access to the Fed’s building in Washington.

President Donald Trump has frequently voiced dissatisfaction with the Fed’s “wait-and-see" approach to lowering interest rates under Powell.

President Trump on Monday lobbed another broadside at Fed Chair Jerome Powell in an invective-laced note scrawled on a list of central bank interest rates around the world — accusing him of costing “the USA a fortune.