25 C.F.R. § 292.10 : Indians — BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR — ECONOMIC ENTERPRISES — GAMING ON TRUST LANDS ACQUIRED AFTER OCTOBER 17, 1988 — EXCEPTIONS TO PROHIBITIONS ON GAMING ON NEWLY ACQUIRED LANDS —RESTORED LANDS" EXCEPTION — How does a tribe qualify as having been restored to Federal recognition?

For a tribe to qualify as having been restored to Federal recognition for purposes of §292.7, the tribe must show at least one of the following:

(a) Congressional enactment of legislation recognizing, acknowledging, affirming, reaffirming, or restoring the government-to-government relationship between the United States and the tribe (required for tribes terminated by Congressional action);
(b) Recognition through the administrative Federal Acknowledgment Process under §83.8 of this chapter; or
(c) A Federal court determination in which the United States is a party or court-approved settlement agreement entered into by the United States.

25 C.F.R. § 292.10