November 21, 1862
Ordered, That no arms ammunition, or munitions of war be cleared or allowed to be exported from the United States until further order: that any clearances for arms, ammunition, or munitions of war issued heretofore by the Treasury Department be vacated if the articles have not passed without the United States, and the articles stopped; that the Secretary of War hold possession of the arms, etc., recently seized by his order at Rouses Point, bound for Canada.
ABRAHAM LINCOLN.
Abraham Lincoln, Executive Order—Prohibiting the Export of Arms and Munitions of War Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/202686