As US states continue to legalise cannabis for medical and recreational use, an awkward tangle of conflicting state and federal laws is proving confusing for airport passengers.

Is cannabis legal in the US? Anyone even vaguely familiar with the topic knows this is a more complex question than it seems.

Since California became the first state in the nation to legalise medical cannabis in 1996, a wave of marijuana legalisation – for recreational use as well as medical – has swept across the country.

Colorado and Washington were the first two states to legalise recreational cannabis, and others have followed suit. 

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Chris Lo ~ Airport Technology ~