GPS Tracking Of Immigrants In ICE Raids Troubles Advocates

(NBCNews) Federal immigration authorities were able to track an undocumented Guatemalan woman from the time she left her home in the morning and headed to work at a food processing plant in Mississippi to the time she left work roughly 10 hours later. They were able to do so because the woman had received an ankle monitor upon being released from ICE detention and Immigration and Customs Enforcement officials used data gleaned from her monitor to target raids this month on her plant and six others that led to the arrests of nearly 700 people. Unsealed search warrants from the raid reveal that immigration authorities have tracked such GPS data from dozens of undocumented immigrants with ankle monitors. Lawyers and immigration advocates told NBC News they had not previously heard of ICE employing this tactic which they called troubling" and said raised concerns about immigrants rights.