Here is an interesting thought experiment, should the US and Canada merge into one nation?:
Imagine, if you will, a moment in the not-too-distant future: A decades-long effort by Chinese companies to infiltrate Canadian banking and drilling firms has succeeded in securing Canada’s oil and natural gas fields for pillage. At least some money from these deals trickles into Ottawa’s coffers, which is more than the government can say for its oil in the Arctic, where Canada has been muscled out of its claims by extraction companies with the backing of the Russian government. A network of Chinese ports has secured the sea lines along the Northwest Passage, circumscribing Canadian sovereignty, and Canada’s military, enfeebled after years of reliance on the United States, is powerless to resist. Canada effectively lapses into a vassal state, reliant on neocolonial patriarchs in Beijing and Moscow.
This dystopian scenario isn’t the plot of an episode of TheTwilight Zone or somemodish alternate-history,sci-fi story — it’s the threat laid out by Diane Francis, a veteran business reporter and current editor at large of Canada’s National Post, in her newly released book, Merger of the Century: Why Canada and America Should Become One Country. And while she frames the book as a “thought experiment,” she believes a U.S.-Canadian union is essential to both countries’ futures — that facing economic infringement, “a merger makes good business sense.” She’s thought it through, down to the last dollar each Canadian should be compensated for their natural resources in a U.S. buyout. [Foreign Policy]
You can read much more at the link, but this would only work if the threat was real enough to warrant the two nations entering into some kind of open border, shared security confederation. I do not see people in Canada ever agreeing to merge politically with the US just because the difference in populations would limit Canada’s ability to shape national policy. The threat from outside nations would have to be extremely great for the Canadians to give that up. Also what political system would a CanAmerica go with anyway, the Congressional system in the US or the Parliamentary system in Canada?
If the two countries were to merge politically would the capitol necessarily be in Washington, DC? It seems like the Canadians would have a strong case that it should be in Ottawa which is more centrally located between the two countries major population centers? Either that or make a brand new capitol city somewhere that is centrally located? Like I said it is an interesting thought experiment with so many complexities I do not see a full merger ever being possible.