Public Citizen, the consumer advocacy group made famous by Ralph Nader, filed a formal complaint with the Federal Elections Commission last week, charging that Freddie Mac chief lobbyist Mitch Delk may have run afoul of political contribution laws with his fundraising activities. The group is asking the FEC to investigate whether Delk and the Republican fundraising organization Epiphany Productions violated various campaign finance laws when the two put on a series of fundraising events