President-elect Donald Trump is personally making moves to shore up support for one of his more controversial Cabinet nominations: former Rep. Matt Gaetz for attorney general.

Trump is reportedly calling Republican senators to discuss Gaetz and ask for their support. At least three Senate Republicans, Sens. Lisa Murkowski (R-AK), John Cornyn (R-TX), and Susan Collins (R-ME), have publicly expressed concern about the nomination and have not said if they would confirm him. With the Senate likely having a three-seat Republican majority, Trump would need them on board.