Portalemida: The rules would require the disclosure of ingredients used by the petroleum developers to improve the results of fracking.
A federal judge struck down the Obama administration's signature effort to regulate hydraulic fracturing on public lands, putting another of the president's environmental initiatives in legal limbo months before he leaves office.
In an order signed Tuesday, U.S. District Judge Scott Skavdahl said the U.S. Bureau of Land Management can't set the rules because Congress has...