I am not sure a state is required to allow free access to citizens of other states in emergency situations. However requiring a vaccination to enter is not closing the borders. Did further research and I was correct. In court cases upheld by the Supreme Court states can close its borders to citizens of other states using their emergency powers.Hawaii is a state. As a state it must allow all citizens access to that state. They are not permitted to close their borders to any US citizen. I’d say it certainly is a violation of your rights. It could be against the 4th amendment if unreasonable search without a warrant.