That's factually incorrect. No one in the EU can sue a California company for failing to comply with EU laws so long as the company does not have a physical presence in the EU. They'd have to block their site or something as an EU court has no jurisdiction over a California company and would be unable to take action against them.
An explicit law would need to be made in your jurisdiction forcing you to comply with their laws. I'm not aware of any such thing.
An explicit law would need to be made in your jurisdiction forcing you to comply with their laws. I'm not aware of any such thing.