WASHINGTON – If President Trump could change one thing about his presidency, it would be appointing Jeff Sessions as his first attorney general.

“If you would have one do-over as president, what would it be?” NBC’s Chuck Todd asked the president in an interview that aired Sunday on “Meet the Press.”

Trump answered, “Well, it would be personnel.”

“I would say if I had one do-over, it would be, I would not have appointed Jeff Sessions to be attorney general. That would be my one,” Trump said.

The Alabama Republican was the first U.S. senator to endorse Trump’s unconventional presidential run and then acted as a key surrogate on his campaign.

But as attorney general, Sessions recused himself from doing work on the Russia probe, handing the FBI investigation over to his deputy, Rod Rosenstein.

After the president fired FBI Director James Comey, Rosenstein appointed special counsel Robert Mueller, whose report didn’t find that Trump’s campaign conspired with the Russians, but also didn’t exonerate the president on obstruction of justice.

Todd asked the president if he believed the appointment of Sessions was his “worst mistake.”

“Yeah, that was the biggest mistake,” the president said.

Sessions resigned as the attorney general in November 2018.

He’s since been replaced by Attorney General William Barr, who’s been a loyal defender of the president.

“Bill Barr is very, he’s equally tough,” Trump said when asked if Barr’s become the president’s new version of Roy Cohn, the president’s late lawyer who had served as Sen. Joseph McCarthy’s chief counsel. “The job he’s done is incredible. He’s brought sanity back.”