Originally Posted by
warakorn
Maybe I misunderstood something: I thought US CBP is responsible to enforce federal immigration laws. If a State has additional testing/quarantine requirements (e.g. HI), then it is up for the State (e.g. State Troopers) to enforce this. Where am I wrong here?
Correct, but the federal government probably doesn't want to just go "we'll check for vaccine certificates, then it's a free for all" but want each state to have the proper follow-up protocols in place. E.g. if they want to mandate a post-arrival test like many other countries have, it'd be up to the states to enforce this. There's all sorts of considerations that go into something like this, counter to popular "the government just doesn't care, LET ME IN" belief...