Trump had nominated Habba, whom he tapped on an interim basis in March, for the full-time appointment. But Sens. Cory Booker and Andy Kim used blue slips — which empower home-state senators to block U.S. attorney and District Court judge nominees — to keep her from advancing in the chamber.

Iowa, has previously rejected President Donald Trump’s calls to disregard the federal official confirmation tradition. The senator’s spokesperson quoted him as telling

President Donald Trump threatened legal action over a Senate tradition Democrats have used to block certain judicial nominees, escalating a long-running dispute with Senate Judiciary Committee Chairman Chuck Grassley (R-IA).