# § 1557. Authority for exemptions in appropriation laws
A provision of an appropriation law may exempt an appropriation from the provisions of this subchapter and fix the period for which the appropriation remains available for expenditure.
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**Source Credit**: (Pub. L. 97–258, Sept. 13, 1982, 96 Stat. 937; Pub. L. 101–510, div. A, title XIV, § 1405(a)(1), Nov. 5, 1990, 104 Stat. 1679.)
| Revised Section | Source (U.S. Code) | Source (Statutes at Large) |
| --- | --- | --- |
| 1557 | 31:708. | July 25, 1956, ch. 727, § 9, 70 Stat. 650. |
## Editorial Notes
### Amendments
1990— substituted “Authority for exemptions in appropriation laws” for “Authorization to exempt” in section catchline and amended text generally. Prior to amendment, text read as follows: “A provision of an appropriation law may exempt an appropriation from this subchapter and fix the period for which the appropriation remains available for expenditure.”
## Statutory Notes and Related Subsidiaries
### Effective Date of 1990 Amendment
Amendment by applicable to any appropriation account the obligated balance of which, on , has not been transferred under , as in effect , with transitional provisions, see , set out as a note under .