The recent collapse in US border crossings proves enforcement works

United States immigration policy and enforcement, and the people it reaches: visa and asylum rules, deportation, border operations and the status of those already living in the country. Legislated rarely and governed largely by executive action and litigation rather than statute.

Policing of United States borders, covering patrols, inspections, detention, deportation coordination and the use of barriers and surveillance technology. Carried out mainly by Customs and Border Protection and Immigration and Customs Enforcement, whose tactics are a recurring subject of litigation.