(BLOOMBERG) — The Obama administration today goes before the U.S. Supreme Court for the first time to defend climate-change policies that industry groups and Republican-led states say amount to a costly overreach of federal power.

Seven years after the court said the Environmental Protection Agency could regulate greenhouse-gas emissions, the justices are considering whether the agency misused that authority by imposing permit requirements on power plants and factories.

The court gave the EPA a preliminary victory in the case in October, refusing to consider arguments that would have barred the agency from addressing climate change at all. That left states and business groups fighting the permit rules, which they say may ultimately affect millions of facilities, including bakeries and apartment complexes.

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