Article Photos: Solid evidence elusive in right-to-work debate 7/7

Michigan House Democratic Leader Elect Tim Greimel, right, and current House Democratic Leader Rick Hammel, left, meet with the media, in Lansing, Mich., Monday, Dec. 10, 2012, to denounce the state's right-to-work legislation which was passed last week in Lansing. (AP Photo/Carlos Osorio)