Between July 1-4, 2026, U.S. Immigration and Customs Enforcement conducted a series of enforcement operations across Gallatin County, detaining an estimated 100+ people through traffic stops, home raids, and workplace sweeps. Local immigrant resource center Bienvenidos documented approximately 25-30 detentions on Monday-Tuesday, followed by more than 80 on Wednesday, with additional arrests continuing through Thursday. Attorneys and community organizations reported that many of the detained individuals had no criminal records and were already participating in the legal immigration process with pending applications and scheduled court appearances. People detained were rapidly transferred between facilities including the Helena Hold Room, Cascade County Detention Center, and facilities in Idaho, Washington, and Nevada, with limited transparency about their locations or conditions.