Bruce Springsteen and the E Street Band perfored at Fed Ex Field last weekeend, and between classic numbers like 'Born to Run' the boss got political.At one point he said he welcomes fans of all ideological persuations to his concerts, 'with the exception of Vice President Dick Cheney. I'm not sure about him,' he told the crowd.Later Springsteen said President Bush ought to be impeached and started chanting, 'impeach, impeach.'But the call was not picked up by the mulitiude, some of whom even began to boo.