Deal Reached on Fast-Track Authority for Obama on Trade Pact

The leaders of Congress’s tax-writing committees reached agreement Thursday on legislation to give President Obama “fast track” authority to negotiate an ambitious trade accord with 11 other Pacific nations, beginning what is sure to be one of the toughest legislative battles of his last 19 months in office.

The “trade promotion authority” bill — likely to be unveiled Thursday afternoon — would give Congress the power to vote on the Trans-Pacific Partnership once it is completed, but would deny lawmakers the chance to amend what would be the largest trade deal since the North American Free Trade Agreement.