Wyo. Stat. § 41-12-702: When binding; notice of ratification.

The said compact shall not be binding or obligatory upon the state of Wyoming or any of the other high contracting parties thereto unless or until the same shall have been ratified by the legislature of Nebraska, and consented to by the congress of the United States. The governor of Wyoming shall give notice of the ratification and approval of said compact by the Wyoming legislature to the governor of Nebraska and to the president of the United States.