My understanding is it's complicated in the US, but between most other western countries there are treaties allowing foreign judgements to be enforced domestica

My understanding is it's complicated in the US, but between most other western countries there are treaties allowing foreign judgements to be enforced domestically. >If so, does it mean that, as a hypothetical website owner, I need to understand and be compliant with every law in every possible country, or risk fines / imprisonment? By the letter of the law, yes. The idea of a borderless internet never had specific legal standing, it's just largely a convention on non-enforcement.