A draft environmental impact statement (EIS), under the National Environmental Policy Act (NEPA), 42 U.S.C. Wilton petitioned to acquire 282 acres near Galt for a casino. In 2009, the Department of the Interior restored Wilton’s federal recognition and agreed to “accept in trust certain lands formerly belonging to” Wilton. Wilton was erroneously excluded from the settlement. The government agreed to restore Indian status.

In 1979, several California rancherias, including Wilton, sued.

The 1958 Rancheria Act disestablished Wilton and 40 other reservations. Wilton Rancheria, a Sacramento area Indian tribe, was federally recognized in 1927.