Indian reservation Has the same meaning as the term Indian country in 18 U.S.C. 1151, except that such term does not include:
(i) Any lands that are located within a State in which a tribe did not exercise governmental jurisdiction as of December 21, 2000, unless that tribe is recognized after that date by either an Act of Congress or pursuant to regulations of the Secretary of the Interior for the administrative recognition that an Indian group exists as an Indian tribe (25 CFR part 83); and
(ii) Lands taken into trust or acquired by an Indian tribe after December 21, 2000 if such lands are not located within the external boundaries of an Indian reservation or former reservation or are not contiguous to the lands held in trust or restricted status as of December 21, 2000; and
(2) In the State of Oklahoma, means lands that:
(i) Are within the jurisdictional areas of an Oklahoma Indian tribe (as determined by the Secretary of the Interior); and
(ii) Are recognized by the Secretary of the Interior as of December 21, 2000, as eligible for trust land status under 25 CFR part 151.