Trade Adjustment Assistance Modifications Act of 2000

Trade Adjustment Assistance Modifications Act of 2000 - Amends the Trade Act of 1974 to extend from 26 to 52 weeks the benefit period (including any additional period) for trade readjustment allowances for adversely affected workers enrolled in training programs.

Amends the Internal Revenue Code to establish a tax credit equal to 50 percent of the amount paid for coverage for the taxpayer and family under qualified health insurance during a period that the taxpayer or spouse is receiving trade adjustment assistance.

Declares that workers in any firm producing textile or apparel goods whose employment is terminated, or threatened with termination, as a result of either a decrease in the firm's sales or production, or a firm's plant or facility closure or relocation, shall be certified by the Secretary of Labor as eligible to receive adjustment assistance under the Trade Act of 1974 at a certain level of benefits.