Minnesota's high court upheld an appellate court ruling in favor of a county's zoning ordinance that bans all industrial-mineral mining, including silica-sand mining. A silica-sand mining company argued the ordinance violated the dormant Commerce Clause by discriminating against its business. The hi...

A district court denied summary judgment to the U.S. government in a lawsuit concerning California's cap-and-trade agreement with Quebec. The government argued the agreement violated the Treaty Clause of the U.S. Constitution because it was binding and "confederat[ed] the laws of the two jurisdictio...

The Court of Federal Claims held that the U.S. government was not liable for the flooding of homes near two dams managed by the U.S. Army Corps of Engineers in Houston during Hurricane Harvey. Property owners downstream of the dams argued that the government flooded their lands by opening the dams' ...

The Washington Supreme Court invalidated a rule promulgated by the state's Department of Ecology authorizing regulation via emission standards of businesses that do not directly emit greenhouse gases (GHGs), but whose products do. Industry groups and utility companies argued the Department lacked au...

The Court of Federal Claims held the U.S. government liable for the flooding of homes and businesses near two dams managed by the U.S. Army Corps of Engineers in Houston during Hurricane Harvey. Property owners argued that the government improperly used their land to retain floodwaters during the hu...

A district court preliminarily enjoined Iowa from enforcing a 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 c...

The U.S. Claims Court granted in part and denied in part the U.S. government's motion for summary judgment in a challenge against FWS for rerouting spring waters that had previously flowed through church property into a restoration channel in an effort to save a native fish species. The church argue...