At what point, and under which president, has American foreign policy been unambiguously driven by ideal liberal tenets?

Question

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Woodrow Wilson's foreign policy was driven by ideal liberal tenets, which he called "The Fourteen Points." These included principles such as self-determination for nations, free trade and open diplomacy, and the creation of an international organization for resolving conflicts. Wilson saw World War I as an opportunity to promote these ideals and played a major role in the negotiations that led to the Treaty of Versailles and the creation of the League of Nations. Despite opposition and ultimately rejection of the treaty by the US Senate, Wilson's vision for liberal internationalism was a significant influence on American foreign policy for decades to come.

At What Point, and Under Which President, Has American Foreign