For a lot of Americans, leaving the country isn't just something you do in an afternoon or weekend.. as it can be in Europe.
So it's not that they have some kind of "Stubborn" streak that says "Screw the world".. it's just a matter of convenience.
And for those who have never left, they look at immigration/emigration numbers that tell them that people in (nearly) every country on the planet have filed papers to wait for their turn to get into America.
People vote with their feet.
Now of course.... If Canada had lower taxes and higher temperatures... It might be a different story.
