The U.S. Supreme Court, in a splintered 5-4 decision, affirmed dismissal of a constitutional challenge to a California law that forbids in-state sale of pork meat from breeding pigs that are "confined in a cruel manner." Out-of-state pork producers challenged the law on dormant Commerce Clause groun...

In an unpublished order, the Fifth Circuit, 2-1, stayed EPA's disapproval of SIPs submitted by Texas and Louisiana following the Agency's 2015 revision to the ozone NAAQS. The states moved for a stay pending review of EPA's disapproval. The court found a stay was appropriate because the states made ...

The Fifth Circuit, 2-1, affirmed a district court ruling that denied the Sabine River Authority (SRA)-Louisiana's motion to dismiss a lawsuit concerning its release of water from a reservoir on the Sabine River between Texas and Louisiana. Property owners in both states argued that SRA-Louisiana and...

The Fifth Circuit dismissed Louisiana's challenge to the Biden Administration's interim estimates on the social cost of greenhouse gas emissions. Louisiana initially sought to preliminarily enjoin the interim estimates from being used, arguing they were procedurally invalid, arbitrary and capricious...

The U.S. Supreme Court held, 6-3, that Montana landowners' challenge to an easement allowing public access to a road running through their property was not time barred. The landowners sued over the scope of the easement under the Quiet Title Act (QTA), arguing the road's public use intruded on their...

A district court denied conservation groups' motion to intervene in a lawsuit concerning EPA's and the Army Corps of Engineers' rule defining the scope of the CWA. The groups sought intervention as of right, arguing they had "a significant, protectable interest" because they represent those who use ...

The D.C Circuit denied an industry group's challenge to EPA's 2021 rule requiring power plants in several upwind states to reduce nitrogen oxide emissions. The group argued the rule was arbitrary and capricious, and that EPA failed to conduct a legally and technically appropriate assessment as requi...

A district court denied a mining company's motion to dismiss an Indian tribe's challenge to a land exchange between the company and the Forest Service. The tribe argued that the land exchange implicated its sovereign interests, including a right under an 1854 treaty to use the land for hunting, fish...

A district court dismissed a challenge to the Michigan Public Service Commission's 2017 and 2018 orders requiring electricity suppliers to buy energy from local sources. Industry groups argued the local clearing requirement violated the dormant Commerce Clause. The court concluded the requirement di...

A district court denied an animal advocacy group's and individuals' motion for summary judgment in a challenge to the National Park Service's (NPS') management of the tule elk population in the Tomales Point area of Point Reyes National Seashore. The plaintiffs argued NPS' failure to timely revise i...