US and Mexico fight NAFTA battle on trucks, tariffs

Ban of Mexican trucks on US roads sparks NAFTA scrap.

TUCSON -- Mexico slapped tariffs on 90 American agricultural and manufactured exports on Monday in retaliation for Washington's move to block Mexican trucks from using U.S. highways.

Mexican Economy Minister Gerardo Ruiz said about $2.4 billion worth of exports from 40 U.S. states would be affected and that his government would soon publish a list of them.

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