Answer:
If one state sues another state, the case falls under the original jurisdiction of the U.S. Supreme Court. This is specified in Article III, Section 2, Clause 2 of the United States Constitution, which grants the Supreme Court original jurisdiction in cases between states. The case would be filed directly with the U.S. Supreme Court, bypassing lower federal or state courts.
OR
Article III, Section II of the Constitution establishes the jurisdiction (legal ability to hear a case) of the Supreme Court. The Court has original jurisdiction (a case is tried before the Court) over certain cases, e.g., suits between two or more states and/or cases involving ambassadors and other public ministers.
Step-by-step explanation: