I've been thinking about this and how talking about the US as a homogenous entity is a mistake. The R0 of a big city is going to be higher than in a smaller city, suburb or the country side. For example, even before the shutdowns I could go to the grocery and count on one hand the number of people I might be within 6' of. Now it's even less. In a place like NYC, that seems impossible.

I and all the people I know are taking all the precautions, but density has to play into how fast something can spread.