U.S. District Judge Robert Pratt sits down with Michael Gartner and Scott Sailor in this week's episode of Unwritten Rules. The Iowa Cubs will host their 13th annual citizenship ceremony on July 6. 25 candidates from 15 different countries will be sworn in as new citizens before the game. Pratt and Gartner recall the early ideas of the event and how it got started. They also look back at some of their favorite memories and what they look forward to the most during the ceremony.