Canada has officially legalized recreational marijuana. What a historical event for Canadians, and honestly, for the world. I wonder which country is next!

Despite the fact that marijuana is legal in Canada now, it's still considered a criminal substance in many countries, and most importantly, in the United States.

Thanks to something called the U.S. Patriot Act, if you purchase marijuana with a credit card in Quebec or Canada, the details of that transaction may be investigated by the U.S. Government.

Visa and Mastercard are almost all located in the United States.

As a result, if you paid for weed using a credit card or smartphone using RFID technology, the U.S. government can effectively ban you from the entering the United States now and forever.

This is no joke.

Also, did you post a photo of yourself on Facebook with your new marijuana items, or Tweet about it? Not a good idea either.

I know you're asking - wait, what about the U.S. Constitution, doesn't it protect individual's privacy by making unlawful searches and seizures unconstitutional?

Yes - however, Canadians are not protected by U.S. law.

Moreover, if you work for the SQDC or any other legal weed dispensaries, your payroll may be done via the U.S. by servers or companies that provide payroll processing or HR services.  As a result, the eyes of the United States government you would actually be considered a participant in the trafficking of illegal substance in the eyes of the United States government. 

The takeaway for all Canadians: Stick to cash and debit cards or pre-paid cards if you plan on buying marijuana online or in store.