Trump has nominated Florida Rep. Matt Gaetz for attorney general, he posted on his social media.

Gaetz was seen traveling with Trump in the motorcade Wednesday during the president-elect’s visit to Washington, D.C.

The role is a Senate-confirmed appointment.

Trump called Gaetz a “deeply gifted and tenacious lawyer” who “will end militarized government, protect our borders, dismantle criminal organizations, and restore Americans’ gravely broken faith and trust in the Justice Department.”

Gaetz is an explosive pick by Trump to become the federal government’s law enforcement chief, leading the same executive branch of government that spent years investigating allegations about the Florida congressman. Gaetz was informed that the DOJ not asking for charges just last year. He has long denied any wrongdoing.

Gaetz faces a ongoing investigation by the House Ethics Committee for the same allegations, related to sex trafficking and obstruction of justice.

Gaetz has been at Mar-a-Lago almost daily since Election Day, helping make suggestions and contributing to other administrative selections, sources told ABC News.

-Will Steakin of ABC News