The acronym "I.C.E." most commonly stands for "Immigration and Customs Enforcement," which is a federal law enforcement agency under the United States Department of Homeland Security. ICE was created in 2003 and is responsible for enforcing immigration laws, conducting criminal investigations, and protecting national security and public safety.
Besides this, "ICE" can also refer to other things such as "In Case of Emergency" (used in mobile phones for emergency contact), "Internal Combustion Engine," or the solid form of frozen water, among other meanings depending on context.
