Liquor sales and distribution are pretty tightly regulated in Canada. Technically, it isn't even supposed to cross provincial borders except to & from licensed resellers. I doubt you will find a legitimate shipper of Canadian liquor for private sale to the US.
Recently a bill went before senate to allow wine to be shipped to individuals across provincial borders. I don't recall hearing if the bill passed yet. I recall it looked promissing. Unfortunately, the back bencher who submitted the bill only worded it for wine. I guess that is all he drinks?
With great power comes Awesome irresponsibility.