A divided Supreme Court on Tuesday abruptly halted President Obama’s controversial new power plant regulations, dealing a blow to the administration’s sweeping plan to address global warming.

In a 5-4 decision, the court halted enforcement of the plan until after legal challenges are resolved.

The surprising move is a victory for the coalition of 27 mostly Republican-led states and industry opponents that call the regulations “an unprecedented power grab.”

By temporarily freezing the rule the high court’s order signals that opponents have made a strong argument against the plan. A federal appeals court last month refused to put it on hold.