Khizr Khan touts John McCain as his son's 'hero'

Arizona Sen. John McCain was a source of encouragement for Khizr Khan's son, Humayun. Khan has been the subject of attacks by Donald Trump and told CNN, "Senator McCain -- he's my hero." "The last book my son read that I sent him was Senator McCain's book about courage: "Why Courage Matters." Trump responded to Khan's speech by saying his wife, Ghazala Kahn, who stood on stage with him, was forbidden from speaking because of their Muslim faith.