(a) Authorization of appropriationsExcept as provided in subsection (b), there are authorized to be appropriated—
(b) Limitation on authorization
Subsection (a) shall not in any way affect payments to the States pursuant to section 500 of title 16.
(c) Spending authority
Any spending authority (as defined in section 651 of title 2) provided in this subchapter shall be effective for any fiscal year only to such extent or in such amounts as are provided in appropriation Acts.