Genuine questions of genuine concern

Hey all 28M here living with a 27F and two cats. Somewhere in the Midwest (not MN). As I sit here trying to just get through the day, I wonder. What the hell can I even do if/when push comes to shove.

What am I to even say, prep, or think day-to-day when all I can imagine is gonna happen is a platoon at my door demanding papers with a non-judicial warrant, sometime in the next 6-months to a year?

I'm scared, nervous for my family, and vastly unprepared and want some serious advice from serious people.