Regarding the US and Canada, there are NAFTA cross-border tax rules which are complex and annoying, but not especially onerous in terms of tax obligations.
Most overseas American don't pay American income taxes either, because of minimum thresholds and widespread (anti) double taxation agreements.
Those people still have the hassle of having to declare American taxes, without generating any revenue for the fisc. That's a pure deadweight loss, if there ever was one.
Regarding the US and Canada, there are NAFTA cross-border tax rules which are complex and annoying, but not especially onerous in terms of tax obligations.