The Nye Committee, officially known as the Special Committee on Investigation of the Munitions Industry, was a United States Senate committee (April 12, 1934 – February 24, 1936), chaired by U.S. Senator Gerald Nye (R-ND). The committee investigated the financial and banking interests that underlay the United States' involvement in World War I and the operations and profits of the industrial and commercial firms supplying munitions to the Allies and to the United States. It was a significant factor in public and political support for American neutrality in the early stages of World War II.
During the 1920s and 1930s, dozens of books and articles appeared about the high cost of war, and some argued that financiers and arms manufacturers had maneuvered the United States into entering World War I. One of the best-known was Smedley D. Butler, a retired Marine Corps general who had become a spokesman for left-wing anti-war elements. Historian Charles Callan Tansill's America Goes To War (1938) exploited the Nye Committee's voluminous report of testimony and evidence to develop and confirm the heavy influence exercised by Wall Street finance (notably J.P. Morgan) and the armaments industry (notably Du Pont) in the process that lead to American intervention.
The push for the appointment of Senator Gerald Nye (R-ND) to the chairmanship of this committee came from Senator George Norris (R-NE). According to peace activist Dorothy Detzer, Norris said, "Nye's young, he has inexhaustible energy, and he has courage. Those are all important boons. He may be rash in his judgments at times, but it's the rashness of enthusiasm." Norris proposed Nye as "...the only one out of the 96 whom he deemed to have the competence, independence and stature for the task."
The committee was established on April 12, 1934. There were seven members: Nye, the committee chair; and Senators Homer T. Bone (D-WA), James P. Pope (D-ID), Bennett Champ Clark (D-MO), Walter F. George (D-GA), W. Warren Barbour (R-NJ), and Arthur H. Vandenberg (R-MI).
Stephen Rauschenbusch, son of Christian Social Gospel activist Walter Rauschenbusch, was appointed lead counsel for the Committee; his assisting counsel included Robert Wolforth, Josephine Burns and Alger Hiss. John T. Flynn "played a major role in the course of the investigation" as a member of the committee's Advisory Council of experts. Burns and Rauschenbush, who met on the committee, married soon after and co-authored a book that recounts salient testimony gathered by the investigation, War Madness (Washington, D.C., National Home Library Association, 1937). Alger Hiss served as a legal assistant (counsel) to the committee from July 1934 to August 1935. Most famously, Hiss "badgered" DuPont officials and questioned and cross-examined Bernard Baruch on March 29, 1935. About their testimony, Dorothy Detzer (Appointment On The Hill, p. 169) reports: "The four solemn Du Pont brothers," averred that "the corporation's profits of 400% during the First World War seemed only the good fruit of sound business."
The Nye Committee conducted 93 hearings and questioned more than 200 witnesses. The first hearings were in September 1934 and the final hearings in February 1936. The hearings covered four topics:
- The munitions industry
- Bidding on Government contracts in the shipbuilding industry
- War profits
- The background leading up to U.S. entry into World War I.
The committee documented the huge profits that arms factories had made during the war. It found that bankers had pressured Wilson to intervene in the war in order to protect their loans abroad. Also, the arms industry was at fault for price-fixing and held excessive influence on American foreign policy leading up to and during World War I.
According to the United States Senate website:
"The investigation came to an abrupt end early in 1936. The Senate cut off committee funding after Chairman Nye blundered into an attack on the late Democratic President Woodrow Wilson. Nye suggested that Wilson had withheld essential information from Congress as it considered a declaration of war. Democratic leaders, including Appropriations Committee Chairman Carter Glass of Virginia, unleashed a furious response against Nye for 'dirtdaubing the sepulcher of Woodrow Wilson.' Standing before cheering colleagues in a packed Senate Chamber, Glass slammed his fist onto his desk until blood dripped from his knuckles." 
In her memoir, Appointment On The Hill (p. 169), Dorothy Detzer, an intimate eye-witness to the Committee's processes, summarizes: "The long exhaustive investigation ... produced a sordid report of intrigues and bribery; of collusion and excessive profits; of war scares artificially fostered and [disarmament] conferences deliberately wrecked." The "recommendations, accompanying the committee's reports to the Senate, were presented in a series of interlocking legislative measures ... The Neutrality Bill, providing for an embargo on arms and loans to nations at war, was the only legislation even partially enacted into law. But even it was crippled by its 'half-measure' provisions. (p. 171).
Nye created headlines by drawing connections between the wartime profits of the banking and munitions industries to America's involvement in the World War. Many Americans felt betrayed and questioned that the war had been an epic battle between the forces of good (democracy) and evil (autocracy), as it had been depicted in pro-war propaganda. This investigation of these "merchants of death" helped to bolster sentiments favoring neutrality, non-interventionism, disarmament, and taking the profits out of weapons procurements.
The committee reported that between 1915 and January 1917, the United States lent Germany $27 million. In the same period, it lent to Britain and its allies $2.3 billion. These loans were made during wartime: July 28, 1914 – November 11, 1918.
Because of these facts Senator Nye, many war critics, and members of the American public concluded that the US entered the war for reasons of profit, not policy — because it was in the interest of American finance banks and investors for the Allies not to lose so that they would be able pay interest and principal on their loans. The committee's findings did not achieve the aim of nationalization of the arms industry, but gave momentum to the non-interventionist movement and sparked the passage of the Neutrality Acts of the 1930s in 1935, 1936, 1937, and 1939.
- Herman, Arthur. Freedom's Forge: How American Business Produced Victory in World War II, pp. 6, 12, 79, Random House, New York, NY, 2012. ISBN 978-1-4000-6964-4.
- Stuart D. Brandes, Warhogs: A History of War Profits in America (2015) pp 210=225.
- Advocate of Peace Through Justice, Volume 85. American Peace Society. 1923. p. 156. Retrieved 20 November 2018.
- King, William C. (1922). King's Complete History of the World War ...: 1914-1918. History Associates. pp. 732–734. Retrieved 20 November 2018.
- Bogart, Ernest Ludlow (1920). Direct and Indirect Costs of the Great World War. Oxford University Press. pp. 301–330. Retrieved 20 November 2018.
- Butler, Smedley (1935). War is a racket : the antiwar classic by America's most decorated General, two other anti-interventionist tracts, and photographs from the Horror of it (Reprint 2003 ed.). Feral House. ISBN 9780922915866.
- Brandes, Warhogs: A History of War Profits in America (2015) pp 221-222.
- Cole 1962, p. 68.
- Tuchman, Barbara W. (1984), The March of Folly, New York: Random House, p. 382.
- Dorothy Detzer, Appointment On The Hill (New York, Henry Holt, 1948), pp 166-68; Dexter misspelled the name as "Raushenbusch."
- Wayne S. Cole, Senator Gerald P. Nye and American Foreign Relations (Minneapolis, University of Minnesota, 1962 p. 72.
- Weinstein, Allen (1978). Perjury: The Hiss-Chambers Case. New York. ISBN 9780817912260. Retrieved 23 November 2016.
- "Munitions industry. Preliminary report on wartime taxation and price control". US Government Printing Office (US GPO). 20 August 1935. pp. 23, 28, 60, 113–115, 127. Retrieved 23 November 2016.
- Smith, John Chabot (1976). Alger Hiss, the true story. New York: Holt, Rinehart and Winston. pp. 83–84. ISBN 9780030137761. Retrieved 23 November 2016.
- Herman, Arthur (2002). Joseph McCarthy: Reexamining the Life and Legacy of America's Most Hated Senator. New York: Simon & Schuster. pp. 220–221. ISBN 9780684836256. Retrieved 23 November 2016.
- "Historical minute essay: Merchants of Death". United States: Senate. Retrieved 17 January 2011.
- John Edward Wiltz, "The Nye Committee Revisited." The Historian 23.2 (1961): 211-233.
- The Nye Report (full text), MTHolyoke
- Nye Committee hearings (Munitions industry, naval shipbuilding: Preliminary report of the Special Committee on Investigation of the Munitions Industry):
- Brandes, Stuart D (1997), Warhogs: A History of War Profits in America.
- Cole, Wayne S (1962), Senator Gerald P. Nye and American Foreign Relations.
- Coulter, Matthew Ware. The Senate Munitions Inquiry of the 1930s: Beyond the Merchants of Death (Praeger, 1997).
- Detzer, Dorothy. Appointment on the Hill (New York, Henry Holt, 1948) online.
- Wiltz, John Edward (Spring 1961), "The Nye Committee Revisited", Historian, 23 (2): 211–33, doi:10.1111/j.1540-6563.1961.tb01684.x.
- Rosenblatt, Maurice, A Register of His Papers, Library of Congress.
- Molander, Earl A. (April 1976), "Historical Antecedents of Military-Industrial Criticism", Military Affairs, 40 (2): 59–63, JSTOR 1987146.
- Cooper, John Milton (May 1976), "The Command of Gold Reversed: American Loans to Britain, 1915-1917", The Pacific Historical Review, 45 (2): 209–30, JSTOR 3638495.
- Neutrality acts, US: Department of state.