Immigrant surveillance

Immigrant surveillance refers to the practice of tracking both illegal and legal immigrants through several methods, some of which include electronic verification, border surveillance, or federal raids. Historically, countries such as the United States have required that immigrants carry evidence of citizenship. Controversies within immigrant surveillance in the United States involve the alleged racial profiling committed by police departments and negligence found in detention centers. Laws concerning surveillance and immigration vary by country but terrorist attacks have made the issue more prevalent.