After September 30, 1997, financial assistance may not be provided under the United States Housing Act of 1937 [
42 U.S.C.
1437 et seq.] or pursuant to any commitment entered into under such Act, for Indian housing developed or operated pursuant to a contract between the Secretary and an Indian housing authority, unless such assistance is provided from amounts made available for fiscal year 1997 and pursuant to a commitment entered into before September 30, 1997. Any housing that is the subject of a contract for tenant-based assistance between the Secretary and an Indian housing authority that is terminated under this section shall, for the following fiscal year and each fiscal year thereafter, be considered to be a dwelling unit under section
4152
(b)(1) of this title.