President Trump in an interview broadcast Sunday said that appointing Jeff Sessions as his first attorney general was his “biggest mistake” in the Oval Office.

“I would say if I had one do over, it would be, I would not have appointed Jeff Sessions to be attorney general,” Trump said on NBC’s “Meet the Press.” “That was the biggest mistake.”

Sessions was a top 2016 campaign surrogate for Trump and the first senator to endorse him, but their relationship soured after Sessions recused himself from the investigation into Russian interference in 2016, leading then-Deputy Attorney General Rod Rosenstein to appoint special counsel Robert Mueller.

Read more at The Hill.