The USA is effectively becoming an innovation black hole from all angles of late. I predict people moving away until only the ultra right remains.
That being said I'm a US citizen that thinks about moving increasingly all the time.
https://en.wikipedia.org/wiki/Emigration_from_the_United_Sta...
As of June 2016, the State department's consular section estimated that there are 9 million non-military U.S. citizens living abroad,[3][4] an increase from the 4 million estimated in 1999.
The above includes many retirees, who find their retirement incomes stretch further abroad. But, it also includes a lot of PHD students who have troubles finding academic jobs inside the US etc.
https://www.npr.org/2018/01/15/578098190/budgets-suffer-afte...