On May 25, the U.S. Supreme Court announced its decision in Sackett v. EPA, which established the standard for determining when a wetland, stream, or other water is a “water of the United States” (WOTUS) protected by the Clean Water Act. This webinar hosted by the National Association of Wetland Managers (NAWM) discussed the decision and some of its ambiguities, potential impacts on aquatic resource protection, and possible next steps for states and tribes.