They were spurred by the growth in isolationism and non-interventionism in the US following the US joining World War I, and they sought to ensure that the US would not become entangled again in foreign conflicts.
The legacy of the Neutrality Acts is widely regarded as having been generally negative since they made no distinction between aggressor and victim, treating both equally as belligerents, and limited the US government's ability to aid Britain and France against Nazi Germany.
The Nye Committee hearings between 1934 and 1936 and several best-selling books of the time, like H. C. Engelbrecht's The Merchants of Death (1934), supported the conviction of many Americans that the US entry into World War I had been orchestrated by bankers and the arms industry for profit reasons.
[3] Democratic President Franklin Roosevelt and especially Secretary of State Cordell Hull[citation needed] were critical of the Neutrality Acts for fear that they would restrict the administration's options to support friendly nations.
[4] Roosevelt's State Department had lobbied for embargo provisions that would allow the president to impose sanctions selectively.
[10][page needed] In January 1937, Congress passed a joint resolution outlawing the arms trade with Spain.
[7] In a concession to Roosevelt, a "cash-and-carry" provision that had been devised by his advisor Bernard Baruch was added:[citation needed] the president could permit the sale of materials and supplies to belligerents in Europe as long as the recipients arranged for the transport and paid immediately with cash, with the argument that this would not draw the U.S. into the conflict.
Roosevelt believed that cash-and-carry would aid France and Great Britain in the event of a war with Germany, since they were the only countries that controlled the seas and were able to take advantage of the provision.
President Roosevelt, who supported the Chinese side, chose not to invoke the Neutrality Acts since the parties had not formally declared war.
An "outstanding Republican leader" who supported helping nations under attack, however, told H. V. Kaltenborn that the embargo was futile because a neutral country like Italy could buy from the US and sell its own weapons to Germany, while US companies would relocate factories to Canada.
This was followed by the Lend-Lease Act of March 1941, which allowed the U.S. to sell, lend or give war materials to nations Roosevelt wanted to support: Britain, France, and China.
[21] Following the sinking of the U.S. destroyer Reuben James while she dropped depth charges on German U-boats on October 31, many of the provisions of the Neutrality Acts were repealed on November 17, 1941.
[25] In 1948, Charles Winters, Al Schwimmer, and Herman Greenspun were convicted under the 1939 Act after smuggling B-17 Flying Fortress bombers from Florida to the nascent state of Israel during the 1948 Arab–Israeli War.