The Michigan House and Senate voted Thursday to approve a bill barring unions from collecting mandatory fees from non-members. Republican Gov. Rick Snyder also endorsed it Thursday.
White House spokesman Matt Lehrich said Obama has long opposed right to work laws, "and he continues to oppose them now."
The spokesman said the president believes the economy "is stronger when workers get good wages and good benefits, and he opposes attempts to roll back their rights."
Lehrich said Michigan workers' role in helping reviving the U.S. auto industry shows "how unions have helped build a strong middle class and a strong American economy."