CO HB1124

Prohibits Colorado law enforcement officers from arresting or detaining individuals based solely on federal civil immigration detainer requests, which lack judicial review and constitute warrantless arrests under state law.

Establishes that continued detention of individuals beyond their release eligibility date under federal immigration requests violates Fourth Amendment protections against unlawful seizure.

Restricts probation officers and departments from providing personal information (including contact details, meeting times, and locations) about individuals to federal immigration authorities.

Allows law enforcement to coordinate phone or video interviews between federal immigration authorities and incarcerated individuals only if the individual is advised in writing of their right to decline, remain silent, consult an attorney, and is informed statements may be used against them.

Preserves law enforcement's ability to cooperate with federal immigration authorities when executing federal judge-signed warrants and to enforce criminal laws in coordination with federal agencies.