Legalization of pot in several U.S. states appears to have hurt the marijuana import business, with seizures by U.S. Customs and Border Patrol falling during the last decade, even as seizures of other drugs went up. Last year, 861,231 pounds of marijuana were confiscated at U.S. ports of entry, down from 2.4 million pounds in 2013 and 4.3 million pounds in 2009.

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