Former federal prosecutor Joe diGenova said Thursday on a charged "Hannity" interview that Attorney General Jeff Sessions does not understand his job and should give President Trump the "courtesy of a resignation" after the midterm elections.

DiGenova -- a former U.S. attorney for the District of Columbia -- and Sean Hannity discussed how it would be politically unfavorable for Trump to ever fire Sessions.

"The President of the United States was and is entitled to a fully engaged attorney general. He has never had that," diGenova said. "Jeff Sessions has no command presence. He doesn't understand the job he has."

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Earlier Thursday, Sessions fired back against critics including the president. “I took control of the Department of Justice the day I was sworn in, which is why we have had unprecedented success at effectuating the President’s agenda—one that protects the safety and security rights of the American people, reduces violent crime, enforces our immigration laws, promotes economic growth, and advances religious liberty.”

DiGenova said Sessions is "blind" to the corruption at the Department of Justice, accusing former and current top brass James Comey, Robert Mueller and Chris Wray of acting in an untoward manner in their roles.

He called Wray, the current FBI director, "an empty suit" and said Mueller and Comey, both former directors, are "so close [it's like] they came out of the same womb."

DiGenova said Sessions made a major mistake in accepting the nomination of attorney general in the first place, knowing that he would recuse himself from anything relating to Trump and Russia.

He said that instead, Sessions should have called for a special counsel to investigate how the Hillary Clinton email case was handled by the DOJ, and to "investigate the conduct of the people at senior levels" of the department.

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