The key words are buying in the US.
Well, since I don’t plan on being anywhere else, I only know about buying here.
And money laundering still requires you to convert it back into currency. I am not sure what you are making reference to?
We could do 1000x more to curtail drug trafficking if we simply forced a replacement of the $100 bill with new currency. Lots more bad stuff is done with Benjamins that has ever been done with bitcoin.