Walter F. George served in the U.S. Senate for 34 years, during the presidential administrations of Calvin Coolidge, Herbert Hoover, Franklin D. Roosevelt, Harry Truman, and Dwight D. Eisenhower. Sen. George was one of a group federal legislators targeted by Liberal Democrats to be "purged" in the 1938 Democratic primaries. George won handily. He was a leader in America's bipartisan foreign policies at the time of World War II and its aftermath. Following his Senate tenure, President Eisenhower appointed George ambassador to the North Atlantic Treaty Organization, which was "determined to safeguard the freedom, common heritage, and civilization of their peoples, founded on the principles of democracy, individual liberty and the rule of law."