Ensuring the Collection of Critical Intelligence Act of 2011 - Requires the Attorney General, Deputy Attorney General, or the Assistant Attorney General for the Criminal Division of the Department of Justice (DOJ) to consult with the Director of National Intelligence and the Secretary of Defense (DOD) before allowing any DOJ officer or employee to institute a prosecution of an alien in a United States District Court for a terrorist offense or to interrogate any such alien in a criminal investigation or prosecution of a terrorist offense.