Arthur Vandenberg

A pre-war isolationist, the Michigan Republican announced his conversion in a 1945 Senate speech and, as chairman of the Foreign Relations Committee in a Republican Congress, delivered votes for a Democratic president: ratification of the UN Charter, the Truman Doctrine, the Marshall Plan in 1948 and the Vandenberg Resolution that paved the way for NATO. His principle that 'politics stops at the water's edge' became shorthand for bipartisan foreign policy. Critics on the right saw it as surrender to an expanding executive.