SAN FRANCISCO – The Electronic Frontier Foundation (EFF) sued the Department of Homeland Security (DHS) and Immigration and Customs Enforcement (ICE) today demanding public records about their use of administrative subpoenas to try to identify their online critics. Court records and news reports show that in the past year, DHS has used administrative subpoenas to unmask or locate people who have documented ICE's activities in their community, criticized the government, or attended protests. The subpoenas are sent to technology companies to demand information about internet users who are often engaged in protected First Amendment activity. These subpoenas are dangerous because they don’t require judges’ approval. But they are also unlawful, and the government knows it. When a few users challenged them in court with the help of American Civil Liberties Union affiliates in Northern California and Pennsylvania, DHS withdrew them rather than waiting for a decision.…