Sen. John McCain, R-Ariz., receives the Liberty Medal from Chair of the National Constitution Center's Board of Trustees, former Vice President Joe Biden in Philadelphia, Monday, Oct. 16, 2017. (AP Photo/Matt Rourke)
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Sen. John McCain, R-Ariz., receives the Liberty Medal from Chair of the National Constitution Center's Board of Trustees, former Vice President Joe Biden in Philadelphia, Monday, Oct. 16, 2017. (AP Photo/Matt Rourke)
