The data, which the Deportation Data Project gathered through public records requests, does not cover the administration’s latest surge in Minneapolis and St. Paul. The Department of Homeland Security has framed its escalations into urban areas as an effort to “remove the worst of the worst,” calling the immigrants it is focused on detaining “dangerous criminal illegal aliens.” But Blair said the data on detainees’ criminal records — and lack thereof — shows a different pattern. Meanwhile, the data shows that those who are arrested are far less likely to be released, while deportation rates are increasing. “The most likely reason for this is because the Trump administration has put in place new rules that have been challenged in court, often successfully, to bar release,” said David Hausman, another co-director of the Data Deportation Project and a UC Berkeley law professor. In July, ICE also issued new guidance stating that immigrants who cross the border illegally and are taken into custody aren’t eligible for a bond hearing.