Borah was involved through the 1920s in efforts for the outlawry of war. Chicago lawyer Salmon Levinson, who had formulated the plan to outlaw war, labored long to get the mercurial Borah on board as its spokesman. Maddox suggested that Borah was most enthusiastic about this plan when he needed it as a constructive alternative to defeat actions such as entry into the World Court, that he deemed entangling the U.S. abroad. By the time of the 1924 election, Levinson was frustrated with Borah, but Coolidge's statement after the election that outlawry was one of the issues he proposed to address, briefly resurrected Borah's enthusiasm. only to have it fall away again. It was not until 1927, when French Foreign Minister Aristide Briand proposed the U.S. and his nation enter into an agreement to "outlaw war" that Borah became interested again, though it took months of pestering by Levinson. In December 1927, Borah introduced a resolution calling for a multilateral version of Briand's proposal, and once the Kellogg–Briand Pact was negotiated and signed by various nations, secured ratification for that treaty by the Senate.