NEW YORK, NEW YORK - JUNE 09: The badge of an Immigration and Customs Enforcement (ICE) agent is seen as they patrol the halls of immigration court at the Jacob K. Javitz Federal Building on June 09, 2025 in New York City. Federal agents are arresting immigrants during mandatory check-ins, as ICE ramps up enforcement following immigration court hearings. The Trump administration has ordered officials to increase detentions to 3,000 migrants per day. (Photo by Michael M. Santiago/Getty Images)
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Why a developer created this app to alert ICE sightings

Joshua Aaron, a musician and developer, created an app called ICEBlock, where people can post sightings of U.S. Immigration and Customs Enforcement officers across the country. CNN's Clare Duffy speaks to Aaron about what motivated him to create the application and the efforts he has made to keep it accurate and prevent it from identifying users.

03:27 - Source: CNN
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NEW YORK, NEW YORK - JUNE 09: The badge of an Immigration and Customs Enforcement (ICE) agent is seen as they patrol the halls of immigration court at the Jacob K. Javitz Federal Building on June 09, 2025 in New York City. Federal agents are arresting immigrants during mandatory check-ins, as ICE ramps up enforcement following immigration court hearings. The Trump administration has ordered officials to increase detentions to 3,000 migrants per day. (Photo by Michael M. Santiago/Getty Images)
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Why a developer created this app to alert ICE sightings
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