2006—Subsec. (b). Pub. L. 109–288 substituted “section 623” for “section 621”.

1996—Subsec. (c). Pub. L. 104–193 amended subsec. (c) generally. Prior to amendment, subsec. (c) read as follows: “For purposes of this section—

“(1) the term ‘tribal organization’ means the recognized governing body of any Indian tribe, or any legally established organization of Indians which is controlled, sanctioned, or chartered by such governing body; and

“(2) the term ‘Indian tribe’ means any tribe, band, nation, or other organized group or community of Indians (including any Alaska Native village or regional or village corporation as defined in or established pursuant to the Alaska Native Claims Settlement Act (Public Law 92–203; 85 Stat. 688)) which (A) is recognized as eligible for the special programs and services provided by the United States to Indians because of their status as Indians, or (B) is located on, or in proximity to, a Federal or State reservation or rancheria.”

1993—Subsec. (a). Pub. L. 103–66 substituted “under this subpart” for “under this part” in two places.

Amendment by Pub. L. 109–288 effective Oct. 1, 2006, and applicable to payments under this part and part E of this subchapter for calendar quarters beginning on or after such date, without regard to whether implementing regulations have been promulgated, and with delay permitted if State legislation is required to meet additional requirements, see section 12(a), (b) of Pub. L. 109–288, set out as a note under section 621 of this title.

For effective date of amendment by Pub. L. 104–193, see section 395(a)–(c) of Pub. L. 104–193, set out as a note under section 654 of this title.

Amendment by Pub. L. 103–66 effective with respect to calendar quarters beginning on or after Oct. 1, 1993, see section 13711(c) of Pub. L. 103–66, set out as a note under section 622 of this title.