Maine’s four Wabanaki Nations are asking a federal judge to throw out Oxford Casino’s challenge to the state’s new internet gaming law, arguing the measure is grounded in tribal sovereignty and Maine’s longstanding legal agreements with federally recognized tribes. The filing is the latest development in a lawsuit over Maine’s Economic Opportunity Act , which Gov. Janet Mills signed earlier this year after a heated debate over online casino gambling. The law authorizes the Houlton Band of Maliseet Indians, Mi’kmaq Nation, Passamaquoddy Tribe and Penobscot Nation to each receive one internet gaming license and partner with outside operators. NEW: Maine, Wabanaki Nations seek dismissal of Oxford Casino suit over tribal iGaming law, arguing tribes are sovereign governments—not racial groups @RWW pic.twitter.com/eFKi7gJJUN — Suswati Basu (@suswatibasu) May 11, 2026 Oxford Casino, BB Development LLC and Churchill Downs Incorporated sued the state after the law took effect.…