The Major Cities Chiefs Association, in a June 8, 2006 immigration committee report entitled "Recommendations for Enforcement of Immigration Laws by Local Police Agencies," concluded that:

“Immigration enforcement by local police would likely negatively effect and undermine the level of trust and cooperation between local police and immigrant communities. If the undocumented immigrant’s primary concern is that they will be deported or subjected to an immigration status investigation, then they will not come forward and provide needed assistance and cooperation. Distrust and fear of contacting or assisting the police would develop among legal immigrants as well. Undoubtedly legal immigrants would avoid contact with the police for fear that they themselves or undocumented family members or friends may become subject to immigration enforcement.

Enforcement of federal immigration laws would be a burden that most major police agencies would not be able to bear under current resource levels… The specific immigration status of any particular person can vary greatly and whether they are in fact in violation of the complex federal immigration regulations would be very difficult if not almost impossible for the average patrol officer to determine. At this time local police agencies are ill equipped in terms of training, experience and resources to delve into the complicated area of immigration enforcement.

For example, the Katy, Texas Police Department participated in an immigration raid with federal agents in 1994. A total of 80 individuals who were detained by the police were later determined to be either citizens or legal immigrants with permission to be in the country. The Katy police department faced suits from these individuals and eventually settled their claims out of court.”

June 8, 2006