Australia–United States relations Minister for Defence, US Secretary of Defense and US Secretary of State. The first Australian visit by a serving United States President was that of Lyndon B. Johnson in 1966 to seek support for Australia's ongoing involvement in the Vietnam War. Australia had previously sent advisers and combat troops to Vietnam. In 1992, George H. W. Bush was the first of four US presidents to address a joint meeting of the Australian Parliament. Australia's Prime Minister, Kevin Rudd, ratified the Kyoto Protocol on 3 December 2007, leaving the United States and Canada as the last major industrial nations not to
Ngo Dinh Diem presidential visit to the United States while in exile, and to the Catholic Seton Hall University to receive an honorary doctorate. Diệm later received an honorary degree from Michigan State University, where he had stayed in exile earlier in the decade and the day was dedicated in his honor. The South Vietnamese president then traveled westwards across to the pacific coast before returning to Vietnam. The visit was the high point of relations between Diệm and Washington, as in later years, the US government and members of the AFV became increasingly disillusioned with Diệm's failure to liberalize his government and enact changes to make South Vietnam