The United States District Court for the District of Wyoming (in case citations, D. Wyo.) is the federal district court whose jurisdiction comprises the state of Wyoming and those portions of Yellowstone National Park situated in Montana and Idaho; it is the only federal court district that includes portions of more than one state. Law professor Brian C. Kalt has argued that it may be impossible to impanel a jury in compliance with the Vicinage Clause of the Sixth Amendment to the United States Constitution for a crime committed solely in the Idaho portion of the park (and that it would be difficult to do so for a crime committed solely in the Montana portion). The court has locations in Cheyenne and Casper.