EFFECTIVE DATE.

SEC. 506. EFFECTIVE DATE. (a) In General.— The amendments made by sections 501, 502, 503, 504, and 505 shall take effect on the date the Agreement enters into force with respect to the United States. (b) Covered Workers.— (1) General rule.— Except as provided in paragraph (2), no worker shall be certified as eligible to receive assistance under subchapter D of chapter 2 of title II of the Trade Act of 1974 (as added by this subtitle) whose last total or partial separation from a firm (or appropriate subdivision of a firm) occurred before such date of entry into force. (2) Reachback.— Notwithstanding paragraph (1), any worker— (A) whose last total or partial separation from a firm (or appropriate subdivision of a firm) occurs— (i) after the date of the enactment of this Act, and (ii) before such date of entry into force, and (B) who would otherwise be eligible to receive assistance under subchapter D of chapter 2 of title II of the Trade Act of 1974, shall be eligible to receive such assistance in the same manner as if such separation occurred on or after such date of entry into force.