President Donald Trump said Tuesday on CNBC’s “Squawk Box” that Federal Reserve Chair Jerome Powell might be making money off of the renovations to the central bank’s headquarters in Washington.

President Trump is fighting to reshape the Federal Reserve by replacing Chair Jerome Powell with Kevin Warsh — but if the Senate doesn't confirm Warsh by next month, it's not clear who will run the nation's central bank.

Kevin Warsh is taking another step toward his decade-long goal of winning the top job at the Federal Reserve by appearing at a hearing before the Senate Banking Committee on Tuesday.

Earlier Tuesday, Trump told CNBC he would be disappointed if the new Fed chair did not lower rates swiftly, and again slammed Powell for renovation costs at the bank's headquarters.