During World War I, Indian nationalists took advantage of Great Britain’s preoccupation with the European war by attempting to foment revolution in India to overthrow British rule. Their activities were aided politically and financially by the German Government. Indian nationalists in the United States were active in the independence movement effort through fundraising, arms buying, and propagandizing through the Hindustan Ghadar newspaper published in San Francisco. The Justice Department and U.S. Attorney records reproduced herein primarily concern the U.S. government’s prosecution of these nationalists in the “Hindu Conspiracy Case” for violations of the Espionage Act (40 Stat. 217-231) arising from two major incidents. The Immigration and Naturalization Service records reproduced herein relate to efforts to revoke the citizenship of certain Indians naturalized as U.S. citizens, as well as to general efforts to exclude Indians from admission to the United States and Canada.