Acting with unusual speed, the state Supreme Court on Tuesday ordered the reinstatement of Gov. Scott Walker's controversial plan to end most collective bargaining for tens of thousands of public workers.

The court found that a committee of lawmakers was not subject to the state's open meetings law, and so did not violate that law when it hastily approved the collective bargaining measure in March and made it possible for the Senate to take it up. In doing so, the Supreme Court overruled a Dane County judge who had halted the legislation, ending one challenge to the law even as new challenges are likely to emerge.

The changes on collective bargaining will take effect once Secretary of State Doug La Follette arranges for official publication of the stalled bill, and the high court said there was now nothing to preclude him from doing that. La Follette did not return a call Tuesday to say when the law would be published.

The ruling came on lines that have become familiar in recent years for the often divided court.