I have, myself, rejected all mission offers to the US since January, but I have the luxury of not living there.
From the other side of the pond, the US future looks very grim, and I have no knowledge at my disposal that lets me see a path toward reversion that doesn't go through a violent phase.
It's a systemic problem; the POTUS is a symptom. And I don't see how such a large and complex system is going to get fixed fast enough to prevent something terrible from happening.
After that, it will go back to something more peaceful. But I wouldn't want to be there during the transition.
The time to act was 20 years ago I'm afraid.