These twelve US presidents have something in common. This is a complete list — they’re the only presidents that qualify for this list. What unites them?
John Adams
John Quincy Adams
Grover Cleveland
Ulysses S. Grant
Andrew Jackson
Lyndon Johnson
John F. Kennedy
Franklin Delano Roosevelt
Theodore Roosevelt
Harry S Truman
George Washington
Woodrow Wilson
Hints will be forthcoming if necessary.
HINT #1 (Nov. 6, 2008): Theodore Roosevelt was the first president to qualify for this list.
HINT #2 (Nov. 8, 2008): Bill Clinton had a chance to put himself on the list, but it didn’t work out.