Which state did Richard Nixon represent in the U.S. Senate?

Which state did Warren G. Harding represent in the U.S. Senate? Which state did Harry S. Truman represent in the U.S. Senate? Which state did John F. Kennedy represent in the U.S. Senate? Which state did Lyndon B. Johnson represent in the U.S. Senate? Which state did Barack Obama represent in the U.S. Senate? Which state did Joe Biden represent in the U.S. Senate? Which state did James Monroe represent in the U.S. Senate? From which school did John F. Kennedy earn his undergraduate degree?