The Sixth Circuit held that it has jurisdiction to hear numerous lawsuits challenging EPA's and the U.S. Army Corps of Engineers' "waters of the United States" (WOTUS) rule. The rule went into effect on August 28, 2015, but on October 9, 2015, the court issued a nationwide stay of the rule pending f...

The Ninth Circuit held that EPA did not act arbitrarily and capriciously when it disapproved in part Arizona's regional haze SIP and issued a replacement federal implementation plan (FIP) in place of the disapproved SIP elements. First, EPA did not act arbitrarily and capriciously when it disapprove...