trevor potter (born october 24, 1955) is a lawyer, former commissioner and chairman of the united states federal election commission. he is the founder and president of the campaign legal center, a nonprofit organization which works in the areas of campaign finance and elections, political communication and government ethics. a republican, he was the general counsel to john mccain's two presidential campaigns. potter is a vocal critic of unlimited corporate spending and dark money in politics allowed by the "citizens united v. fec" ruling.