In the late twentieth century, the three recognized Oneida tribes: of Wisconsin, New York, and the Thames reserve in Canada, filed suit in a land claim against New York State for its treaty and forced purchase of their ancestral lands after the American Revolutionary War, seeking the return of thousands of acres. The US Supreme Court has ruled the purchase was unconstitutional, as New York did not have the treaty ratified by the US Senate, and had no authority under the US Constitution to deal directly with the Oneida, a right reserved to the federal government. In 2010 the state offered the Oneida Tribe of Wisconsin more than 300 acres in Sullivan County in the Catskill Mountains, with permission to construct a gambling casino, and 2 acres in Madison County, to settle their part of the suit. Several private and public interests oppose the deal, including other federally recognized tribes in New York.