2. John F. Kennedy
3. 1949, Harry Truman
4. Article II, Section 1
5. Rutherford B. Hayes
6. John F. Kennedy
7. Franklin D. Roosevelt
8. James Madison
9. Theodore Roosevelt
10. George Bush
11. Samuel Morse
12. James Buchanan
13. William McKinley
14. Calvin Coolidge
15. Herbert Hoover
16. George Washington
17. 20th amendment
18. Abraham Lincoln
19. Chester Arthur
20. Harry Truman