President Obama, addressing the National Governors Assn., says it does no good 'when public employees are denigrated or vilified or their rights are infringed upon.' In Wisconsin, Gov. Scott Walker says if wayward Democrats don't return in 24 hours, the state will lose a chance to save $165 million.President Obama on Monday waded into the labor standoff in Wisconsin and warned that the rights of public employees should not be infringed upon.