President Obama told employees at Daimler's Detroit Diesel in Redford, Mich., today that lawmakers shouldn't be trying "to take away your right to bargain for better wages."

The comment prompted sustained applause from the largely supportive audience, and came just one day before Michigan's Republican governor, Rick Snyder, is likely to sign so-called right-to-work legislation in the face of union protest.

"These so-called right-to-work laws, they don't have anything to do with economics, they have to do with politics," continued Mr. Obama, who assailed the laws as being about the "right to work for less money."