alt Hacker NewsMake the websites unconnectable from the US. Make domestic ISPs not route the traffic to the site else jail time for the executives. Make VPNs not route traffic to the site else jail time for the executives and being null routed by domestic ISPs.
If you really want to crack down on it, then it could be done.
In the ancient days of 2011, this was done: https://en.wikipedia.org/wiki/United_States_v._Scheinberg