Potentially could happen. Kind of hard to look at the statistics and not be a little depressed. Trying hard not to think about it
Covid 19 numbers

I think it's rather improbable that the entire country gets infected with COVID-19. According to medical experts, once 40-50% of the population obtains a certain virus or disease, the nation will start to develop a sort of herd immunity that mitigates the spread of the virus.
But yeah, the numbers are looking very glim. Like @EnergeticHay said, let's follow safety guidelines and hope for the best.
Currently the USA is getting around 60,000 to 70,000 new confirmed cases a day. At this rate, the whole country could be infected by next year.