President Trump is escalating his criticism of Senate Judiciary Committee Chair Chuck Grassley (R-Iowa) for his unwillingness to overhaul the “blue slip,” a move that has further dismayed Senate Republicans.

The Judiciary Committee chair, and his fellow Republicans, have so far brushed off pressure from the president to nix the long-standing practice.

President Donald Trump on Sunday urged Sen. Chuck Grassley (R-IA) to end the “blue slip” tradition in the upper chamber in order to get the rest of his judicial nominations and attorneys confirmed. Trump trashed the “blue slip,