Miller was a supporter of Native American gaming. In 2000, as ranking member of the House Resource Committee, Miller inserted an amendment to the Omnibus Indian Advancement Act that took an existing cardroom into federal trust for the Lytton Band of Pomo Indians. The amendment made the land acquisition retroactive to 1987, stating that "land shall be deemed to have been held in trust and part of the reservation of the Rancheria prior to October 17, 1988." This allowed the Lyttons to open a casino at the cardroom under the terms of the Indian Gaming Regulatory Act of 1988. Some members of Congress and the gambling industry have called the amendment "underhanded," while other politicians have called the maneuver nothing out of the ordinary.