The IRS wants to know more about the income of one half of hip-hop duo Insane Clown Posse. In a court filing, the government asked a judge Wednesday to enforce a summons against Joseph Utsler, better known by his stage name, Shaggy 2 Dope. Utsler's partner in Insane Clown Posse is Joseph Bruce, known as Violent J. Separately, they have been challenging the U.S. Justice Department over a 2011 report that described their fans, the Juggalos, as a "hybrid gang."