The United States advocated for the creation of the Kellogg-Briand Pact because they wanted to outlaw war. They hoped that the signatories will ensure that there will be no causes of war and there will be a peaceful relationship among the nations.
The United States don't want to engage in another World War after it has experienced the losses that World War I brought them as a nation.
4 presidents were killed, Abraham Lincoln, James A. Garfield, William McKinley, and John F. Kennedy.
They both discouraged contact from outsiders.
