Michele Bachmann and Ann Coulter are among those with the sanest advice to Trump on immigration. Halt all immigration to the U.S. for a period of time. No one group is singled out by this approach.
This would give time for assimilaton and development of non-porous border security and rational immigration policy that adds only the best and brightest. Tens of millions of immigrants, legal and unvetted illegals, have poured into America over the past few years. This is national insanity and certain suicide.