I am wondering if Americans have a constitutional right to decline being tested for the COVID-19 virus.
Consider a scenario in which the state police create a checkpoint on an interstate highway and begin administering a COVID-19 screening test on every person in every car that goes through this checkpoint. Do Americans have a constitutional right to decline being tested and be allowed to pass through this checkpoint, or does a national crisis/emergency negate an American's constitutional rights and thus every person must comply with being tested?
To help clarify my inquiry, what I particularly would like to know is if you are directed to exit your vehicle by a state trooper at this highway checkpoint so a doctor/nurse there can administer a test on you to see if you have COVID-19, can you decline to exit your vehicle and also decline undergoing this medical test? Do Americans have a Constitutional right to decline complying with such a directive?