Opponents of Wisconsin Gov. Scott Walker's budget bill sleep in the Rotunda of the state Capitol in Madison, Wis., on Tuesday, Feb. 22, 2011. (AP Photo/Wisconsin State Journal, John Hart)

Photo by: John Hart

Opponents of Wisconsin Gov. Scott Walker's budget bill sleep in the Rotunda of the state Capitol in Madison, Wis., on Tuesday, Feb. 22, 2011. (AP Photo/Wisconsin State Journal, John Hart)