I think many (if not most) countries in the developed world should reduce immigration, and usa in particular should abolish birthright citizenship.

The first because a lower supply of labor is going to create breathing space for an entire working population who will see tremendous job upheaval due to AI automation. A lower aggregate demand on houses, services will also be welcome to take the fuel out of inflation, and maybe we'll regain some of that experience of true affluence, where scarce things (e.g. access to cabin in the woods, a rowhome in a walkable city, ...) are in abundance. There is also the import of an idle, criminal element that has very clearly reduced quality of life and safety in many places.

Birthright citizen should be abolished because birth tourism and illegally crossing the border to have anchor babies are a vector for foreigners to participate politically and claim imho undeserved welfare benefits.

I think largely these are the stated reasons of the administration too.