Mexico's president Claudia Sheinbaum announced the country will file criminal complaints in US courts over deaths of Mexican citizens in ICE custody and immigration enforcement operations. The complaints involve 14 Mexican nationals who died in immigration detention centers and 3 others who died during enforcement raids. This marks Mexico's most significant diplomatic response to ICE-related fatalities and signals a shift from traditional diplomatic channels to formal criminal prosecution attempts. The move comes amid ongoing tensions over immigration enforcement practices along the US-Mexico border.