A Stateline analysis of ICE data from August 2025 to early March 2026 found about 64,000 of 253,000 total immigration arrests, roughly a quarter, were labeled 'collateral' arrests resulting from street sweeps and raids where people were detained based on appearance or proximity to someone with a warrant. About 70% of collateral arrests involved people with only immigration-related violations, compared with 41% for warranted arrests, and less than 2% involved convictions for violent crimes, with only 18% convicted of any crime. Monthly arrests rose from about 12,000 in January 2025 to over 40,000 in December before falling to 30,000 in February, as ICE introduced a new policy in January allowing real-time warrants for people deemed likely to flee, a policy now facing a court challenge. Lawsuits and public backlash over sweeps in cities like Minneapolis and Chicago have contributed to a decline in large-scale operations, according to a Migration Policy Institute analyst.