Whereas legitimate Mexican traders have free access to America and Canada via the North American Free-Trade Agreement (NAFTA), drug smugglers are granted tariff-free entry to every country in the world thanks to the Single Convention on Narcotic Drugs, which prohibits the regulation or taxation of their product.

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They point to the North America Free Trade Agreement (NAFTA), and say that despite fears about removing U.S.-Mexico trade barriers, that pact ultimately delivered more opportunities than drawbacks.

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