The North American Free Trade Agreement removed restrictions on just about all trade between the United States and its neighbors. But at least one part of NAFTA proved so controversial, it was never implemented. Under the accord, Mexican trucks were supposed to be able to deliver and pick up cargo anywhere in the United States. But American truckers said the plan would threaten their jobs and salaries. Only now is a select group of Mexican trucks allowed to bring goods beyond a narrow zone along the border. It's part of a pilot project Mexican trucking companies say is overdue. But unions still oppose the plan. The World's Lorne Matalon reports from the Mexican border city of Ju-rez.

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