As a sharply partisan Republican member of Congress, CIA Director Mike Pompeo tormented former Secretary of State Hillary Clinton over her response to the deadly 2012 attacks in Benghazi, Libya, which Pompeo called “morally reprehensible.” He also once liked a tweet that branded her successor, John Kerry, a “traitor.”

But now that Pompeo faces a tough confirmation process to become secretary of state himself, he has reached out to Clinton and Kerry, as well as every other living occupant of the office, to ask for guidance. Clinton, for one, has been willing to help.

“These were lengthy calls seeking advice” from the former secretaries, a person familiar with Pompeo’s prep work told POLITICO. “He understands the gravity of the challenge before him.”