I was thinking. How would you, U.S. citizens, react if the provinces of Canada wanted to join the Union as 10 supplemental states?
Off course, with full integration of militaries, 20 U.S. Senators, and congressmen for each new states proportional to it's populations (which would mean an increase of 10% of representatives in the Lower House).
Hmm.. I guess the hypothetical State of Quebec would want to have it's official language stay the French one.
And.. to think of it, the federal tax set in the U.S. would be applied to those new states, but any excessive taxes actually implimented in each provinces would be transferred to state authority.
General healthcare would become fully state-controlled one in the new states, independant from one to another.
Overall, I am sure the whole new unified 60 states would get a lot out of it. More unified secured frontiers, a lot of cheap natural ressources for U.S.'s industries, business opportunities for both of our countries without having to go trough NAFTA.