In the postmortem on this I’m sure they’ll realize that just as we can see now, the “sanctuary states” will suffer the most - though they might not understand why (or care to admit it).
These “replacement American” populations (legal or illegal) tend to be younger - they are replacing an ageing “American” population - and therefore will see a lower overall death rate from this virus. At the same time, they simply have different views of hygiene, and in my (limited) experience aren’t taking the precautions seriously (bunching together unprotected, for example) - so they will carry/transmit it, without actually dying from it (or even requiring hospitalization). While the news stories seem to mention a lot of older and/or sick Americans dying from this, I don’t believe Americans in general are causing the spread so much. The Americans I know are taking precautions; even the young friends of my children who originally ignored common-sense precautions are now scared as some locals are being hospitalized, and everyone knows someone - even just acquaintances through work - who has died from it.
I still know of no one that has it. Friends, friends of friends, family (with exception of one who thinks she had it but has not tested and is already well), work colleagues, etc., no one...not that I’m complaining, but nada.