I’m not sure about now, but in the past the L.A. County Jail cooperated with ICE in the following way: ICE Deportation officers could review the lists of County Jail inmates and could interview any inmates who were foreign-born to determine if they were deportable for being unlawfully present or for their criminal convictions. If the Deportation Officer determined they were deportable, an immigration hold would be placed on them so that, when their County custody ends, they would be turned over to ICE and placed in Deportation (Removal) proceedings. They would have a case before an Immigration Judge, and would have all the due process rights set by statute, including the right to hire counsel, the right (in most cases) to request bond or release, and the right to a full adversarial Deportation hearing. If they are not proven to be deportable, or if they have a valid claim to some form of lawful status, then they will be allowed to remain lawfully in the United States. If they lose their case, they have the right to appeal.
The system was very fair and orderly. Our agency (DHS/ICE) only sought to enforce the immigration laws fairly and objectively, and to see that justice was done. If we believed that the decision should be in the alien’s favor, we would so inform the Immigration Judge, and generally the Judge would defer to our recommendation.
Under the above system, it made sense for the County Jail to cooperate with the Immigration authorities. But today, our federal Immigration agencies have been politicized and some individuals in the agencies are acting in corrupt and lawless ways. I don’t believe that state and local law enforcement should assist the federal authorities who engage in such lawless conduct. Local law enforcement should abide by the Constitution and laws, even if federal agencies do not.

