Possible Clues:

• President who left office in 1913
• President whose father co-founded Yale's Skull and Bones
• Chief Justice appointed by Harding
• Our heaviest president
• President known as "Big Bill"
• Ex-president who swore in President Hoover
• Start to talk to stern president
• ___-Hartley Act
• Time to get behind US President
• Secretary of war under Theodore Roosevelt