I don't think we know which are the most important immig. enforcement measures until we try them. With welfare reform, things we thought were important turned out not to be. What WAS important was the basic signal (people had to work). Wall certainly sends signal (come legally) https://t.co/WWy4n3ZcFJ

— Mickey Kaus (@kausmickey) January 6, 2019

from Twitter https://twitter.com/kausmickey