thanks for your reply.
It seems states are becoming very aggressive and hungry for sale taxes as now some states are looking to tax everything who does $100k or 200 orders a year!!!
That happened with the 2018 court ruling.
So to all, be wary and take measures as in the next few years states will force you to collect sales tax even if you run 100% overseas.
at least income tax is still based of your residency but who knows till when…