On June 1, a group of 23 states including Alaska, Idaho, Kansas, Montana, Nebraska, North Dakota, Oklahoma, South Dakota, Texas, Utah and Wyoming filed a motion to intervene as defendants in California et al. v. Wheeler et al. (U.S. District Court, Northern California, #20-cv-03005). The lawsuit, filed by thirteen states, including California, New Mexico, Oregon and Washington, challenges the Navigable Waters Protection Rule.