Public-safety worker unions in Wisconsin cannot require that fees be paid by non-union members under a pivotal ruling issued Wednesday by the U.S. Supreme Court. Gov. Scott Walker touted the national ruling as a sign Wisconsin was ahead of the curve seven years ago when it passed a landmark law curtailing the power of public unions. Most public unions in Wisconsin were barred from collecting so-called “fair-share” fees by Act 10, the 2011 state law that broadly curtailed their power. But that law exempted public-safety unions such as police, firefighters and the State Patrol. The U.S. Supreme Court ruling applies the ban on requiring payment of fair-share fees by non-union members to all public unions nationwide. It overturns a 41-year-old decision that had allowed states to require that public employees pay such fees to unions that represent them in collective bargaining even if the workers choose not to join — so long as the fees cover only the unions’ costs to bargain and their administration, not their political or advocacy work.