"An operation in 2004 meant to disrupt potential terrorist plots before and after that year’s presidential election focused on more than 2,000 immigrants from predominantly Muslim countries, but most were found to have done nothing wrong, according to newly disclosed government data. The program, conducted by the Department of Homeland Security, received little public attention at the time. But details about the targets of the investigation have emerged from more than 10,000 pages of internal records obtained through a lawsuit by civil rights advocates. Parts of the documents were provided to The New York Times."