Mexico has some strict drug laws... Expats can lose their immigrante status for mere possession. But go to an expat beach party - I've been to many - and you'd think there was a hemp bonfire... Go figure.
One of the really funny things about Mexican border customs agents, which really is true of most Mexicans, is that they are scared shitless of large dogs. When you cross the border, you hit a big button, and if the light shows green, you drive through with NO customs inspection of the contents of your car... If the light shows up red, the customs agents come out and go through the entire contents of your car... When my wife and I drove through, we hit the button, and the light turned red... Not to worry... My 60 lb. dog and my 45 lb dog both in the back seat growled menacingly at the customs agent as he approached the car...just like they'd been trained to do... And, right on cue, the customs agent waved us right on through. I could have had a stinger missile launcher in the back seat and no one would have said a thing... Those big growling dogs are worth their weight in gold! God, I love this country!
Now again, how does your link "prove" me a liar? lol