It seemed to happen in a flash. A cradle of the U.S. labor movement became the 24th state to adopt right-to-work laws, when Republican Governor Rick Snyder of Michigan signed legislation last week banning mandatory union dues. The unions barely had time to muster one big protest in the state capital after the Republican-controlled Legislature approved the bills. But as Shikha Dalmia reports, now Big Labor is preparing for a long war to recover from this huge blow to its power.