[plsvn]

Don’t you then pay taxes to two countries?

Yes but since the Canadian tax is higher, you only pay whichever is the highest rate. But with the way things are headed, that might be US taxes soon.

[Cuttnhorse]

And, most companies have a tax equalization program where they make up the difference if you are taxed at a higher rate than in the US. Plus, as non-resident workers, the Canadian taxes are refunded.