No, in accordance with section 508(d)(1)(C)(ii) of the Act [25 U.S.C. 458aaa-7(d)(1)(C)(ii)], the Secretary is prohibited from reducing the amount of funds required under Title V in subsequent years, except pursuant to:

(a) A reduction in appropriations from the previous fiscal year for the program or function to be included in a compact or funding agreement;

(b) A Congressional directive in legislation or accompanying report;

(c) A Tribal authorization;

(d) A change in the amount of pass-through funds subject to the terms of the funding agreement; or

(e) Completion of a project, activity, or program for which such funds were provided.