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...

The Sixth Circuit granted a petition to review EPA's removal of an air nuisance rule from Ohio's SIP. Environmental groups and individuals argued that EPA violated the CAA and APA in removing the rule. EPA moved to remand without vacatur to review its removal of the rule. The court found that vacatu...