I can't read OP's comment anymore as it has been flagged, but in response to your comment alone: the question isn't whether it's a good idea for someone to trav

I can't read OP's comment anymore as it has been flagged, but in response to your comment alone: the question isn't whether it's a good idea for someone to travel to Hawaii while positive for Covid in the early days of the pandemic, it's whether the state has the legal authority to halt the liberty of interstate travel[0]. If your answer is that emergency situations warrant such "basic, common-sense" restrictions, then my rebuttal is that a) governments will manufacture as many emergency situations as needed, and b) what is basic and common-sense to one may not be to another and in either case, that ratchet will only go one way; in the direction of authoritarianism. [0]: This liberty has most recently been under controversy again in the context of states wanting to ban travel to other states for the purposes of obtaining an abortion.