Should Canada "merge" with the United States of America?

Diane Francis, author of Merger of The Century: Why Canada and the United States Should Become One Country, thinks it's inevitable.

This question may be the most important geopolitical thought experiment for North America's future since the end of WWII.

Branded a traitor in Canada for suggesting the integration of Canada and the United States a decade ago with her book, we discuss Donald Trump's comments and that very idea in a contemporary context with Francis.

How would such a "merger" take place? Are we talking about making a large US-Canada single market with no border between the two countries? Would Canada simply be annexed and become a series of US States? What would be the steps towards such a political union?

Further, Francis highlights geopolitical a ...