The Boston Trust Act, passed in 2014, is a local ordinance that limits cooperation between Boston law enforcement and federal immigration authorities, specifically U.S. Immigration and Customs Enforcement (ICE). The policy aligns with Boston’s broader efforts to protect immigrant communities while maintaining public safety. The act primarily prevents Boston Police Department (BPD) officers from honoring ICE detainer requests or assisting ICE in enforcing civil immigration laws, which are not considered criminal violations under U.S. law.