If you need the waiver to enter into US, do you need it to some countries or areas, i.e. , Puerto Rico, Guam?
Do you need the waiver to some countries / areas?
Anywhere you pass US Customs.
This is correct, but also confusing. Do you know whether, for instance, Puerto Rico has its own custom or US custom will take care of the custom function for them?
Thanks,
It seems "YES", you need the waiver to enter those countries or areas.