EPIC has filed suit against the Department of Justice and Federal Bureau of Investigation under the Freedom of Information Act for documents detailing surveillance of WikiLeaks supporters. After WikiLeaks' November 2010 publication of diplomatic cables, the U.S. government opened investigations into WikiLeaks supporters and pressured many online donation systems, including Amazon and Paypal, to cease processing donations to WikiLeaks. In June 2011, EPIC filed Freedom of Information Act requests with the Department of Justice and the Federal Bureau of Investigation. EPIC is seeking documents that detail government requests for information about users of Facebook, Twitter, Paypal and Visa. For more information see: EPIC: Open Government.