Donning white hard hats for their tour of the Federal Reserve’s construction site on Thursday, President Trump and Fed Chair Jerome Powell almost immediately began squabbling over the cost of the central bank’s building renovations.

The long-simmering clash between President Donald Trump and Federal Reserve Chair Jerome Powell was on full public display during a Thursday afternoon tour of the renovation site at the central bank’s headquarters in Washington,

President Trump used a rare visit to the Federal Reserve to renew his pressure on Fed Chair Jerome Powell, telling reporters that costs to renovate the Fed’s buildings were exorbitant. Powell shook his head at times during the president’s remarks.