There were using these 7 years ago. Newer devices even smaller and cheaper. If they open a pack and it's a powder they can identify it in seconds. From what I've read, and this is crazy, Chinese fentanyl precursor chems are sent to the US because Mexican mail customs is much tougher. That's how loose things have been (all coming to an end now), then they're snuggled into Mexico, made into fentanyl, and smuggled back to the US across the southern border.
To fight the rising tide of illegal drugs flowing into the country, Customs and Border Patrol agents are using lighter handheld, non-intrusive detection technology.
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