Opponents of Gov. Scott Walker's bill to eliminate collective bargaining rights for many state workers protest in the Rotunda of the Capitol in Madison, Wis., on Friday, Feb. 18, 2011. (AP Photo/Andy Manis)

Photo by: Andy Manis

Opponents of Gov. Scott Walker's bill to eliminate collective bargaining rights for many state workers protest in the Rotunda of the Capitol in Madison, Wis., on Friday, Feb. 18, 2011. (AP Photo/Andy Manis)