I do not live in the US, but I love that your system allows you guys to have effectively 51 experiments on how to deal with the spread of a virus, and see the results of every strategy. Do you really think that, if you can't even control your borders between states, your border on the south with Mexico for instance, would ever be effectively controlled to avoid the virus to come through it? The complete failure of California (even when compared to states where the demographics tend more to the older generations) tells me everything that is needed to understand if the lockdown approach works or not.