<deleted by moderator>

There is an unknown form of pneumonia that has developed in China and so far has migrated to Japan. Treatment options seem limited. This isn't just a China problem but could have a worldwide impact. A non US citizen exhibiting possible symptoms who won't cooperate could be turned away although that presents medical risks to others. A citizen who displays symptoms and won't cooperate would likely be held given authorities time to determine if the person is infected.

I see nothing wrong with a quarantine until a determination is made. Doesn't take that long to determine if a person is a carrier of a given strain of a virus.