The Immigrant Legal Resource Center, a nonprofit which advocates for open borders, has developed an interactive resource, entitled "National Map of Local Entanglement with ICE," that shows the degree to which local law enforcement cooperates with federal authorities in the enforcement of immigration law. The map also indicates the degree to which local authorities have enacted policies or laws that limit their involvement with immigration authorities.
The map has a 7-point rating system for the types of policies that limit local jurisdictions’ cooperation with federal immigration authorities. Because the seven factors are cumulative, counties of the same color don’t necessarily exhibit the same policies but do offer the same number of certain types of assistance to the federal Immigration and Customs Enforcement agency. Also, the map shows what are the existing local policy statements and laws, instead of the implementation or compliance with the laws.
Those jurisdictions marked with dark red spend a significant amount of resources and time on civil immigration enforcement under a 287(g) agreement with federal authorities or by contracting with ICE to detain immigrants. The other jurisdictions colored in red do not have formal memoranda of understanding or contracts with ICE, but are willing to cooperate with ICE with deportations by holding immigrants as requested by detainers issued by ICE, providing information about persons in county custody to ICE, and otherwise cooperating with federal law enforcement.
Section 287 (g) of the Immigration and Nationalization Act , according to the Department of Homeland Security, "...allows a state or local law enforcement entity to enter into a partnership with ICE, under a joint Memorandum of Agreement (MOA), in order to receive delegated authority for immigration enforcement within their jurisdictions."
The Immigrant Legal Resource Center states on its website that the federal immigration “continues to expand and grow more punitive, assisted in large part by the time and resources of local governments and law enforcement agencies. Expending any local resources helping Immigration & Customs Enforcement (ICE) is entirely voluntary. Some local and state officials have recognized the poor policy effects of working too closely with ICE, which has torn apart countless families and undermines already strained relations with local law enforcement.”
The ILRC has an advisory board on which serve John Burton, the Chairman of the California Democratic Party, U.S. Rep. Nancy Pelosi (D-CA), Cruz Reynoso -- a former justice of the California Supreme Court.