Pagliano refused to appear before the committee despite subpoenas demanding that he do so, prompting the committee to vote to hold him in contempt of Congress last year.
In his letter to Sessions, Chaffetz wrote that Pagliano was required to comply with the subpoena and that failing to do so amounts to a misdemeanor offense.
"There is no legal basis for Pagliano’s refusal to appear before the Committee. If left unaddressed, Pagliano’s conduct in ongoing a lawful congressional subpoena could gravely impair Congress’s ability to exercise its core constitutional authorities of oversight and legislation," Chaffetz wrote in the letter.
In a statement announcing his letter to Sessions, Chaffetz said that the "authority to compel witnesses is integral to Congress’s and the Committee’s investigative powers."
Chaffetz's letter asking for charges against Pagliano comes as the Oversight Committee chair has declined to launch an investigation into ties between Trump aides and Russian officials.
Read the letter: