South Korea backed off from just such a ban in 2018[1], the details of which might be informative if anyone is trying to determine how likely a similar ban here might be
[1] https://www.pymnts.com/news/bitcoin-tracker/2018/south-korea...
[1] https://www.pymnts.com/news/bitcoin-tracker/2018/south-korea...
I.e. the US.
https://en.wikipedia.org/wiki/Capital_controls_in_Greece
https://en.wikipedia.org/wiki/Exchange_Controls_in_the_Unite...