Obviously that they will affect and follow the US residents, now the ones who are in another country. The IRS has their main sede (if not the only one) in there.
Which countries will follow this... And obviously some countries are working on regulations, maybe restrictions.
If you have enough balls you can easily avoid them ,but you all know that it is never good to try to avoid taxes, specially on the US in where the IRS is veryyy strict.
taxes are voluntarily actually
Maybe avoiding taxes in there could make you being punished with jail for more than years.