“After all, we’re both melting-pot societies,” she says. So why not turn the whole continent north of the Rio Grande into the world’s biggest pot?
This sentence betrays the underlying misunderstanding that makes her proposal the worst possible deal Canada could make. The US is a "melting pot" in which overwhelming pressure is brought to make everybody become members of an ideology which only benefits the top of the pyramid. In looking at Canadian v US culture the biggest reason why such a union is contrary to Canada's best interest can be found in their budgets. Canada's biggest budget item is health care, looking after each other. America's biggest budget item is its various militaries - it thrives on war, conflict and killing. This pretty well sums up the two cultures. Mixing them looks superficially possible, but like oil and water it would not benefit both parties. America would get the second biggest geo-political land mass in the world. Canada would get drugs, ghettos and indiscriminate gunfire.
The structure of government would also hurt Canada. In Canada, after we elect a leader he is on probation throughout his time in office. His fellow MP's can kick him out by a simple majority vote. Parliament can remove him at any time. Most importantly, he must answer to the people in Parliament every day it sits. Not so in America. In the US a terminal Alzheimer's patient can be elected, kept hidden from public view and stage managed like a puppet, and nobody can touch him for four long years. He never has to justify himself to keep his power. That was Ronald Reagan. He was followed by dubya, who could not have survived the cut and thrust of parliamentary debate. God only knows how many people were killed by the policies of those two. US government structure is modeled after England in 1775 and it is relatively unchanged since then. That is why the US "king", the president, can wage war contrary to the will of the nation. No Canadian PM would dare to copy his US counterpart.
Another crucial issue is the two party system in America. America is right wing. The further right they go the more power government usurps. All the US left has to do to get more power in America is follow the right, then politic them into occasional corners. The power is never returned to the electorate no matter what the people think, because there is nobody in power to do it. In Canada our multi-party system prevents that. The NDP has never yet formed a federal government, but it has kept the others honest. It forces them to be closer to centre, to never be as right wing extremist as America.
Who is this author? She claims dual citizenship, but one suspects she is US educated and wishes to see more American consumer culture in Canada. It is hard to believe anybody seriously wants to invite to Canada a culture whose police are at armed standoff with the people, whose right wing males are so power hungry or fearful they cannot appear unarmed in public, and whose military is larger by a factor of somewhere close to 10X than the next competitors. The world does not need an America the size of North America. Canadians will not benefit from Obamacare. We are rather proud of our identity as people who care for each other at the same time as we compete as an internationally respected industrial nation.