Impossible. Nuts. Unbelievable. Those are some of the more polite reactions when I tell people that having a .com domain name for their website is sufficient for them to be subject to US jurisdiction - which allows for nasty stuff like the US government seizing their website or extradition to USA to stand trial over there based on allegations alone.
The bottom line: If you have a .com domain name, or other at-risk domain names like .net, you are subject to US domestic laws and jurisdiction.
This allows the US government to seize your website or even seek your extradition to USA to stand trial, based on allegations of breaking their laws. You’re also at risk from any mistakes and collateral damage.