Wisconsin Gov. Scott Walker signed a highly contested bill Friday morning that takes collective bargaining rights away from most of the state's public employees. He also rescinded layoff notices for about 1,500 state workers.
President Obama has accused Scott Walker, Wisconsin's state's new Republican governor, of an assault on unions. Sarah Palin, Newt Gingrich, Mitt Romney and other possible GOP candidates for president in 2012 take the opposite view.