That is not true. Each state has different regulations, that's why the article says "moved to California" and not just "moved to the USA". It's possible that UK

That is not true. Each state has different regulations, that's why the article says "moved to California" and not just "moved to the USA". It's possible that UK law is incompatible with other states. The USA has as many or more different regulations than the EU, as lobbying is very strong in America.