Purpose: Some local governments are asking their police departments to enforce federal immigration law more aggressively. However, there is little research or policy guidance available to assist police in balancing local immigration enforcement with the norms of community-oriented policing. Methodology: This paper presents results from a national survey of municipal police chiefs. Findings: The survey responses indicate substantial differences in the way that police departments are approaching unauthorized immigration. Implications: The highly varied nature of policing practice on this issue is a function of the lack of clear policy guidance and models for local enforcement of immigration law.