The campaign staffer who accused former congressional candidate Carl DeMaio of sexual harassment pleaded guilty to obstructing justice on Friday. Todd Bosnich admitted to writing a fake threatening letter that he then claimed DeMaio had sent to him, according to federal prosecutors. Although prosecutors said the letter allegation was unrelated to the sexual harassment allegations that Bosnich made against DeMaio in October 2014, the guilty plea could cast doubt on the veracity of the latter claims as well.