Can Trump's border wall really prevent drug smuggling?

Most of the drugs smuggled into the US via vehicles enter through official ports of entry, contradicting Trump's claim.

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    US President Donald Trump cites drug smuggling across the southern border of the United States as a major reason to build a border wall.

    However, the majority of drugs are likely smuggled via vehicles that travel through official ports of entry. At least that is where most are confiscated.

    Al Jazeera's Heidi Zhou-Castro reports from Brooks County, Texas.


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