President Donald Trump on Tuesday pressured Senate Judiciary Committee Chairman Chuck Grassley (R-IA) to scrap the “blue slip” tradition and push through his judicial nominees.

The president fumed over the Democratic Party’s ability to block his “Highly Qualified Judges and U.S. Attorneys” through the blue slip tradition, in a post on Truth Social. He claimed sole credit for getting Grassley reelected, and argued that Democrats had already done away with the tradition.