This thread has a really good answer to your same question! That said, the only thing noteworthy I've heard besides this was that Winston Churchill, a prolific drinker himself, considered the 18th amendment "an affront to the whole history of mankind."

There's a couple of relevant questions in the Prohibition section of the FAQ:

What were other country's opinions of American Prohibition?
Was there an international reaction to prohibition?

What about Mexico and tequila? Did Americans fancy tequila at the time? I can't say I've ever seen a movie or book about prohibition where a patron at a speakeasy ask for tequila.

There are some pretty fascinating histories of Canadian rum runners into the US. Here's a cool map cartoon from the Library of Congress showing the "trans-border cooperation" during US prohibition: http://dessertating.wordpress.com/2014/03/28/booze/ (The LOC doesn't have the image up, hence the link to a blog.)

If it is not to late, who profited the most, Mexico or Canada? I am guessing Canada because of more lax border controls right?

Everyone interested In learning about prohibition of alcohol in America should go on netflix and watch the PBS miniseries called Ken Burns: Prohibition

It made Cuban Rums and Canadian Whiskey staples in the American Liquor cabinet.