A Los Angeles Times investigation published Friday found that Immigration and Customs Enforcement (ICE) agents have repeatedly wrongly targeted and arrested U.S. citizens.
Official figures provided to the Times show that the agency has released more than 1,480 people from custody since 2012 after investigating claims that they were U.S. citizens.
ICE policy requires that a legal review take place within 48 hours if an individual in detention claims to be an American citizen.
The newspaper also identified hundreds of additional cases in which U.S. citizens have been forced to prove their identity in immigration courts, and sometimes have spent months or years in detention.
The Times also found that the children of immigrants and U.S. citizens born outside of the country are the most likely to be mistakenly arrested.