The D.C. Circuit upheld four EPA rulemakings governing greenhouse gases. EPA issued the rules following the U.S. Supreme Court's decision in Massachusetts v. EPA, 549 U.S. 497 (2007), in which the Court clarified that greenhouse gases meet the definition of an air pollutant under the CAA. Petit...

The Fifth Circuit upheld EPA's decision to disapprove certain revisions to Texas' SIP. EPA disapproved the revisions concerning the state's "qualified facilities program" because it did not meet the minor new source review (NSR) SIP nor did it meet the NSR SIP requirement for a substitute major ...

The Ninth Circuit held that the United States can extinguish California's public trust rights when exercising its federal power of eminent domain. The case involves 32.42 acres of land that the U.S. Navy has continuously leased from the state since 1949. The parcel is subject to California's pub...

The U.S. Supreme Court held that a property owner may proceed with his APA suit against the United States claiming that the Secretary of the Interior lacked authority under §465 of the Indian Reorganization Act to take title to land in trust for a Native American tribe seeking to open a casino....

The D.C. Circuit vacated an interim final rule issued by EPA that would allow manufacturers of heavy-duty diesel engines to pay nonconformance penalties in exchange for the right to sell engines that fail to satisfy nitrogen oxide requirements. In 2001, EPA issued a rule requiring a 95% reduction in...

The Sixth Circuit held that the CAA's citizen suit provision does not allow an environmental group to file suit to compel the state of Ohio to administer a particular federal CAA regulation it has chosen no longer to administer. In 2006, the Ohio General Assembly passed legislation that allows the s...