FILE - In this March 12, 2011 file photo, thousands of pro-labor protesters rallied at the Wisconsin Capitol in Madison, Wis. Republican Gov. Scott Walker, a likely 2016 presidential candidate, announced Friday. Feb. 20, 2015, that he supports a surprise move by legislative leaders to quickly vote next week on a bill that would make Wisconsin a right-to-work state. (AP Photo/Morry Gash, File)