The tax that the UN wants to impose, is on
CURRENCY EXCHANGE . The vast majority of people, here and abroad, do NOT regularly change from their currency into another countries. It won't " fly under " anyone's radar, as banks , in the USA , are required to list all fees.
This doesn't have a lot of chance to be passed here, so do, please, enjoy your delusional nightmares, about things you dond't seem to know anything about. : - )