President Trump is completely incapable of dealing with this crisis

The effort to keep COVID-19 out of the U.S. failed. We are beyond the point where the only infected people in the U.S. are people who got it elsewhere and brought it here. We are even beyond the point where the only people with the disease got it from someone who just came back from abroad. People are getting COVID-19 within the U.S. from people who have not recently traveled, and possibly have never left the U.S. That ship has sailed. At this point we need to come up with a strategy for treating the people who have the corona virus here, and for preventing its further spread to the people who don't have it yet.

So that's when our dumbass President gets on the teevee and announces his bold plan to... bar another group of people coming to the U.S.

ADDING: See also this and this and this and this and this.