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Painter argued that FBI Director James Comey violated the Hatch Act, which ensures "that federal programs are administered in a nonpartisan fashion," by making "highly unusual public statements about an FBI investigation concerning a candidate in the election."
Painter said he brought those concerns to the Office of Special Counsel and the Office of Government Ethics with a a complaint against the FBI.
"The letter was sent in violation of a longstanding Justice Department policy of not discussing specifics about pending investigations with others, including members of Congress," wrote Painter.
He also referred to such a disclosure on the eve of a general election as an "abuse of power."
Painter served as an ethics lawyer for George W. Bush's administration from 2005-2007. In the piece Painter discloses that he supported GOP candidates during the primaries, but eventually pivoted to Hillary Clinton.