

I think you mean a few million outspoken critics of the US. US citizens abroad are often well educated and critical of US domestic and international politics and policies.
A more effective response would be to give them microphones and platforms upon which to express their views.


So long as proper education based on science for all parents is non-optional, it should be OK.
Similarly, it should also be optional to admit unvaccinated (without a medical reason) children to daycare centres, certain schools, sports clubs, etc. There are kids who need safe environments, and they should not be forced into hiding due to a reckless minority.