John Fitzgerald "Jack" Kennedy (May 29, 1917–November 22, 1963), often referred to by his initials JFK, was the thirty-fifth President of the United States, serving from 1961 until his assassination in 1963.
***
George Walker Bush (/ˈdʒɔɹdʒ ˈwɑkɚ ˈbʊʃ/; born July 6, 1946) is the forty-third and current President of the United States. He served as the forty-sixth Governor of Texas from 1995 to 2000 before being sworn in as President on January 20, 2001. His current term will end at noon (ET) on January 20, 2009.