The proposed bill, titled the "Immigration and Customs Enforcement Support Act," mandates that certain law enforcement agencies in Michigan perform immigration officer functions under the guidance of federal immigration authorities, specifically the United States Immigration and Customs Enforcement (ICE). It establishes a jail enforcement model and warrant service officer program, requiring law enforcement agencies to create and operate these programs to assist ICE in enforcing immigration laws. Agencies must enter into a written agreement with the Department of Homeland Security to function as federal immigration agents and must designate officers for training and implementation of the act.

Additionally, the bill outlines specific responsibilities for law enforcement officers, including verifying the citizenship or immigration status of individuals before their release and transferring individuals who are unlawfully present in the U.S. to ICE custody upon their discharge from imprisonment or after fines are paid. The law enforcement agency must also participate in transporting individuals in custody to federal facilities. The act will only take effect if Senate Bill No. 42 is enacted into law.