A judge has ruled that federal regulators lack the authority to set rules for hydraulic fracturing, dealing another setback to the Obama administration's efforts to tighten how fossil fuels are mined.

In an order signed Tuesday (June 21st), U.S. District Judge Scott Skavdahl said the Bureau of Land Management can't set the rules because Congress has not authorized it to do so.

Last year, Skavdahl blocked implementation of rules drafted by the agency.