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Michael P. King, Pool, Associated Press
Assistant Attorney General Steven Means answers reporters questions during a recess in a hearing before Dane County Circuit Judge Maryann Sumi at the Dane County Courthouse in Madison, Wis., Tuesday, March 29, 2011. With Republican Gov. Scott Walker's administration insisting a new law eliminating most of state workers' collective bargaining rights had gone into effect and other state and municipal leaders disputing that, many were looking to today's court hearing for some kind of clarity.

MADISON, Wis. — Wisconsin Gov. Scott Walker and his fellow Republicans face a new hurdle in their campaign to curb public-sector unions' power.

So far, Republicans have managed one win after another. They've overcome a filibuster, massive protests, Senate Democrats fleeing the state and even a judge's order blocking the secretary of state from publishing the law.

But now they face another roadblock. Judge Maryann Sumi re-issued her order on Tuesday — and this time she has warned that anyone who violates it will face sanctions.

Still, the matter is far from settled. It's likely the law's legitimacy will be decided by the state Supreme Court.