The term “Indian lands” shall include lands within the definition of “Indian country”, as defined in section
; or “Indian reservations”, as defined in section
of this title, or section
of this title. For purposes of the preceding sentence, such section
of this title shall be applied by treating the term “former Indian reservations in Oklahoma” as including only lands which are within the jurisdictional area of an Oklahoma Indian Tribe (as determined by the Secretary of the Interior) and are recognized by such Secretary as eligible for trust land status under part 151 of title
, Code of Federal Regulations (as in effect on December 21, 2000).