He acted under the powers given to his office. You are insisting that he was wrong, not because a better choice was possible, but because he overreached his authority.
You would be wrong.
“Under our federalist constitutional system,
primary public health powers (“police powers”) reside with the states, not the national government. While we are currently witnessing the largest federal quarantine in modern history stemming from evacuations from Wuhan and cruise ships (the last federal quarantine was
50 years ago for a suspected case of smallpox), the federal government has
very narrow quarantine powers. There are no broad national quarantine powers like those exercised in China and Italy; the US federal government can only act to prevent the spread of COVID-19 into the US or between states. States have the primary quarantine authority, so any compulsory order would be a state or local decision.”