Enforcing Immigration Law: The Role of State and Local Law Enforcement

This report examines the role of state and local law enforcement in enforcing immigration law. The discussion is limited to the role of state and local law enforcement in the investigation, arrest, and detention of all immigration violators. The report does not discuss the prosecution, adjudication, or removal of aliens who violate the law. The report opens with a brief discussion of the types of immigration interior enforcement activities that the former Immigration and Naturalization Service (INS) pursued and the current immigration activities that are now the focus of the Department of Homeland Security (DHS). A discussion of the legal authority that permits state and local law enforcement to enforce immigration law under certain circumstances follows. Current administrative efforts to involve state and local law enforcement in enforcing immigration law as well as selected issues are discussed. The report concludes with a discussion of the pros and cons of such a policy and an analysis of policy options for Congress