Jack Gruber, USA TODAY
Khizr Khan, father of fallen U.S. soldier Humayun S.M. Khan, offers a copy of the Constitution to Donald Trump as he speaks during the 2016 Democratic National Convention.
Khizr Khan, father of fallen U.S. soldier Humayun S.M. Khan, offers a copy of the Constitution to Donald Trump as he speaks during the 2016 Democratic National Convention at Wells Fargo Center in Philadelphia, Pa.