After months of criticizing Federal Reserve Chair Jerome Powell, President Donald Trump took the fight to the Fed’s front door on Thursday, publicly scorning the central bank chief over the ballooning costs of a long-planned building project.

Trump lambasted the Fed for its $2.5 billion renovation of its headquarters and another building ahead of a tour of the site.

The president toured the Federal Reserve’s headquarters with its chair, as the administration intensifies its campaign against his handling of the economy and the multibillion-dollar project.