Business groups are warily eyeing bipartisan Senate talks on reauthorizing the Trade Adjustment Assistance program for signs that lawmakers might include a labor-backed proposal to expand employee notification requirements in the event of pending layoffs.

Sen. Sherrod Brown, D-Ohio, last year introduced a bill with the support of his party's two presidential candidates -- Sens. Barack Obama of Illinois and Hillary Rodham Clinton of New York -- that would broaden the Worker Adjustment and Retraining Notification Act, or "WARN Act," which became law in 1988 despite President Reagan's veto.

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