WASHINGTON (AP) — Donald Trump has had few defenders in Congress as reliable as Matt Gaetz, who has thundered at one prosecutor after another for perceived bias against the president-elect and emphatically amplified the Republican’s rallying cry that the criminal investigations into him are “witch hunts.”

The Florida congressman would be the first U.S. attorney general in four decades who never worked as a government attorney or judge.

The Florida Republican’s abrupt departure effectively halts a House investigation into allegations that he engaged in sexual misconduct and illicit drug use.