This is even more obvious when you consider what the economically-optimal thing to do would be: Shut down nonessential travel to other countries and enact quarantine protocols for essential travel between countries, before you have community transmission. Then test heavily, for cheap.

Trump shut down travel just as doing so became pointless, the USA is barely testing people, and the CDC is resisting drive-through test centres because they are (actual quote) “trying to maintain the relationship between individuals and their healthcare providers.”