Former VP Joe Biden to headline Mitt Romney summit in Park City . 
Mitt Romney
Former GOP presidential nominee Mitt Romney will interview former Democratic Vice President Joe Biden during a Friday evening even FILE - In this May 24 , 2017 , file photo , former Vice President Joe Biden delivers the annual Harvard College Class Day address on In this May 8 , 2017 , photo , then-FBI Director James Comey speaks to the Anti-Defamation League National Leadership Summit in Washi
Former GOP presidential nominee [TGT] will interview former Democratic Vice President Joe Biden during a Friday evening even FILE - In this May 24 , 2017 , file photo , former Vice President Joe Biden delivers the annual Harvard College Class Day address on In this May 8 , 2017 , photo , then-FBI Director James Comey speaks to the Anti-Defamation League National Leadership Summit in Washi