As [...] Donald Trump pledged to “Make America Great Again,”[...] there's a slew of public figures who have made quite a different pledge — to move to Canada. And some members of the public, at least, appeared to be intent on making good on that promise. Canada's immigration website repeatedly crashed as Trump's chances rose late Tuesday. [Many] actors have threatened to cross the border if Trump becomes U.S. President. They're not the first people to threaten to move north of the border. Tens of thousands of Americans are right behind them.