Speaking at the Daimler Detroit Diesel Plant in Redford, Mich., on Monday, President Barack Obama lashed out at the Michigan legislature, which is preparing to pass a right-to-work law, and declared that Americans only needed to look at Michigan if they wanted to see how unions helped build the middle class.

“These so called right to work laws, they don’t have to do with economics,” Obama said. “They have everything to do with politics.

“What they’re really talking about is giving you the right to work for less money,” said Obama. “You only have to look to Michigan where workers were instrumental in reviving the auto industry to see how unions have helped build not just a stronger middle class but a stronger America.”