STATE SUPPLEMENTATION OF BENEFITS UNDER SUPPLE-MENTAL SECURITY INCOME PROGRAM.

SEC. 504. STATE SUPPLEMENTATION OF BENEFITS UNDER SUPPLE-MENTAL SECURITY INCOME PROGRAM. (a) Limitation on State Costs.—Section 401(a)(2) of the Social Security Amendments of 1972 is amended— (1) by inserting “(subject to the second sentence of this paragraph)” immediately after “Act” where it first appears in subparagraph (B), and (2) by adding at the end thereof the following new sentence: “In determining the difference between the level specified in subparagraph (A) and the benefits and income described in subparagraph (B) there shall be excluded any part of any such benefit which results from (and would not be payable but for) any cost-of-living increase in such benefits under section 1617 of such Act (or any general increase enacted by law in the dollar amounts referred to in such section) becoming effective after June 30, 1977, and before July 1, 1979.”. (b) Effective Date.—The provisions of this section shall be effective with respect to benefits payable for months after June. 1977.