When we hit the academic brain drain tipping point in the US, talent isn't going to just start trickling away, it's going to be like a greedy cup siphon. Countries preparing to attract these people now will reap a windfall the US has carefully cultivated over a century. This administration has demonstrated the federal government cannot be trusted to keep it's commitments and long-term plans, and it will now take a generation of stability to disabuse people of that notion.