Judge strikes down Wisconsin right-to-work law
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Wisconsin Gov. Scott Walker's right-to-work law was struck down Friday for violating the state’s constitution, the Associated Press reported late Friday.
The state's Attorney General Brad Schimel has already promised to appeal the decision.
"We are confident Wisconsin's freedom-to-work law is constitutional and will ultimately be upheld," Walker wrote on Twitter.
Right-to-work laws prohibit businesses and unions from requiring all workers, not just union members, to pay union dues. 
Union workers argue right-to-work states require unions to provide services to non-union workers without compensation, calling it an "unconstitutional seizure of union property."
Twenty-five states have similar laws in place. 
In 2014, the Indiana Supreme Court rejected two similar challenges to the state's right-to-work laws.