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U.S. trade envoy says NAFTA has 'failed' Americans

Robert Lighthizer, the U.S. trade representative to the NAFTA renegotiations in Washington, says the trade agreement has "fundamentally failed" many Americans and major changes are needed.
Robert Lighthizer, the U.S. trade representative to the NAFTA renegotiations in Washington, says the trade agreement has "fundamentally failed" many Americans and major changes are needed. 7:36