The Department of Justice snuck back home with its tail between its legs earlier this month after deciding that senior White House officials are exempt from subpoena and thus can freely ignore summons to testify. That's right... they don't have to show up in court if they don't want to, especially with regard to questioning about the possibly illegal firing of eight US prosecuting attorneys. The House Judiciary Committee has been trying to get to the bottom of this because, in the past couple of years a number of prosecutors that didn't toe the party line exactly lost their jobs …