As Immigration and Customs Enforcement escalates its efforts to detain as many people without legal status as possible in California, immigration advocates are reminding people of their constitutional rights.

Guest: Nisa Khan, KQED

Thousands of migrant families across the country received a text message from Immigration and Customs Enforcement last week asking them to report for what seemed like a routine check-in. But many were detained at these check-ins, including at ICE's field office in downtown Los Angeles.

Reporter: Mark Betancourt

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