[walterbell]

> Contact tracing' Korea style is the only proven option on the table.

That only works if, like Korea and Taiwan, it is done from the beginning.

We now know that the virus was in the US and moving through the population since Feb and Jan, i.e. the US has inadvertently been on the "herd immunity" path.

It is also the case that the US is geographically diverse with very different infection patterns across regions and clusters. Hence the federal plan is for states to make local decisions.