"Why can't America and Canada merge into one big ass super power?"

In the 1770's and 1780's we (US) tried it at least once (Musical reference: Stan Rogers "Barrett's Privateers"), and 'back' then we had a shapely colonial ass. Then we tried again in the War of 1812 (Musical reference: Arrogant Worms "Battle Of 1812")

Now that our ass is swollen huge and we can barely sit at our desk I doubt the Canadians are very interested in getting near it, even though we look so post-retro chic adorable as we tool by after work in our fully loaded Dodge Ram on duellies. . .