600K people spread across the US really isn’t that many to deal with. Even if they were all in one place, they wouldn’t be able to do much damage to most of the country before being contained.

1 in 8 being food insecure also is not high enough. Choosing less nutritious food options is a measurement of it, so you could still be eating, just not good food because you live in the middle of a food desert. Most folks in the US are not food insecure.

You’re going to have to tick that number up to over half of the US not being able to eat once a day or more. Like the depression, or worse, but without any government assistance.