I didn't want to start a new thread; so I've dumped the article link, below, in this thread.
Note the following callout in the article: “It is conceivable that fentanyl supply lines could expand to include Mexico-sourced fentanyl products,” according to the CBSA.
Link:
These 9 maps show where Canada’s illegal drugs are coming from
http://globalnews.ca/news/3636788/these-9-maps-show-where-canadas-illegal-drugs-are-coming-from/