security profiling of all candidates for legal entry makes perfect sense. then... enforce assimilation.
1. no "dual language/polylingual" ATMs, no non-english ballots, no bilingual public education, no tax-funded translators, etc... full English immersion: swim, or sink.
2. break the law, be expelled. any law at all. expelled permanently. including zoning ordinances, housing regulations, noise odinances, LITTERING... full lawful requirement: behave, or go home.
etc...
Sheesh! Not one peerson on this forum can do this for five years. Not one. You might not even know you are in violation of the peace and dignity of whatever sanctimonious jurisdiction you are in, and you might not get caught, but it is a sure bet you have broken some law, violated some ordinance, or stepped on the wrong blade of friggin' grass, whether or not you intended to.
Set a realistic standard, please. There are so many laws designed to be revenue generators and job manufacturing devices now, that there is no way to avoid breaking one.
Make reasonable fluency in English reading/writing/speaking a PREcondition for admission.