Empirical research by reputable economists at some top schools concludes that although “immigrants represent 16 percent of all US inventors . . . immigrants are responsible for 36% of aggregate innovation, two-thirds of which is due to their innovation externalities on their native-born collaborators” (Bernstein et al. 2022, p. 1). (I have not yet looked carefully at this research, but have looked at other papers by Rebecca Diamond (no relation), finding them important and well-done.)
We should make it easier for innovators to enter the United States and harder for murderers and thieves to enter. And whatever immigration rules we adopt, we should enforce. We are unfair to those who follow our immigration rules if we allow others to enter the United States without following our rules.
Beyond that, I think our rules can be fairly generous, even letting in many non-innovative immigrants, if at the same time we adopt policies that give a probable path forward to current Americans who are among the least well-off. In a working paper that I hope to return to soon, I argue that we can create this path forward by unbinding entrepreneurs so that they can create more and better jobs for the least well-off.
(I thank my former student and current friend Aaron Brown for alerting me to the article on immigration.)
The empirical research on immigrant innovators mentioned above is:
My working paper mentioned above is:
Diamond, Arthur M., Jr. “Robustly Redundant Labor Markets.” Working Paper. 2021.