Since the 1990s Hal has represented a variety of gaming and racing interests in New Mexico and at the federal level on matters regarding casino and horse racing law, as well as tribal gaming law. He represented Penn Entertainment and Zia Park Racetrack and Casino from 2010 thought 2023. In the mid-90s he represented a number of New Mexico tribal pueblos before the U.S. Department of the Interior regarding the New Mexico-tribal gaming compacts. He continues to advise and counsel clients on federal, state and tribal gaming law.