U.S. Environmental Protection Agency
The Supreme Court wants the Environmental Protection Agency to weigh human health against costs to industry.
300 million pounds of glyphosate are used in the U.S. each year, but its impacts are largely unknown.
Supreme Court decision is a setback to one of the biggest environmental actions of the Obama administration.
Republicans say new rule would give the federal government too much authority over waterways and wetlands.
The controversial Clean Water Act rule protects tributaries with any sign of water, no matter the flow.