CEDAR RAPIDS, Iowa - Democratic presidential contender John Edwards on Monday criticized former President Clinton, arguing that he allowed corporate insiders to shape the 1993 North American Free Trade Agreement that has cost U.S. jobs. Edwards' complaints about the former president beloved by voters in his own party was a defiant move meant to highlight rival Hillary Rodham Clinton's relationship with special interests. It comes two days after Clinton refused Edwards' challenge to stop taking campaign donations from lobbyists, saying many represent good causes. "It's time that the president stood up and fought for American workers," Edwards told a crowd...