A district court dismissed a conservation group's suit to block the Department of Homeland Security from constructing a border wall near the National Butterfly Center in southern Texas. The group argued that the Department violated the Fourth Amendment by entering the Center without consent or warra...

A district court granted environmental groups' request to compel the U.S. Chemical and Safety Hazard Investigation Board to promulgate regulations concerning accidental chemical releases. The groups argued that the Board's failure to implement reporting regulations in the 27 years since Congress ame...

The Ninth Circuit affirmed a district court's dismissal of a constitutional challenge to California's 2015 Low Carbon Fuel Standard (LCFS). Farming groups argued that the state's LCFS violated the Commerce Clause and the federal structure of the Constitution by regulating extraterritorially. But the...

A state court upheld the North Dakota Department of Health's decision to issue an air quality permit for construction of an oil refinery less than three miles from Theodore Roosevelt National Park. Environmental groups argued that the Department's decision to issue a synthetic minor source permit ra...

A district court ruled unconstitutional an Iowa statute that criminalized undercover investigations of slaughterhouses and other animal facilities. Environmental groups argued that the state statute impermissibly restricted their free speech under the First Amendment because it was a content- and vi...