Damn straight. I mean people in the US who live in states were weed is legal might end up crossing statelines to places where weed is still illegal. Also many people who live in countries that have either decriminalized or legalized drugs have forgotten that possession of those drugs in other countries is often very harshly punished.

I have seen multiple accounts of Canadians and Americans going into the UAE with medicinal THC/marijuana on them and not realizing that simple possession of any of that drug is punishable by up to life in prison there. There was a guy a long time ago who was jailed for a long time for literally a microscopic bit of weed on the sole of their shoes. That last one was some utter bullshit. I live in Canada and there are TONS of marijuana smokers and THC users here, I probably have stepped on more than one thing that has had THC or weed in it, so I might have some of the stuff on my clothes/shoes without even knowing it.