If one million poor, uneducated Americans trek hundreds of miles north to Canada to settle, would this generally be good or bad for Canada?

Obviously there are pros and cons, but which are greater?

It would generally be good for Canada.
It would generally be bad for Canada.
It would be neutral. The good and bad would be completely equal.
Select gender and age to cast your vote:
If one million poor, uneducated Americans trek hundreds of miles north to Canada to settle, would this generally be good or bad for Canada?
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