Seems like a good opportunity for other countries to recruit scientists. I think its underappreciated how much of America's modern success comes down to attracting scientists and intellectuals from war torn europe in the 30s-50s.
I hold the idea that brain drain, i.e. emigration of skilled people, is one of only a small handful of real methods to hold fascism to account. With that, as things start to get real bad it seems leaving is something of a moral duty for anyone who cares, has skills that hold real weight, and can still afford to do so. Obviously where this "real bad" point is is hard to say, and there's important tradeoffs to consider…
I am withdrawing my money from the US stock market. Other people might not give a shit, but I want to invest my money in a functional democracy.