Khizr Khan's speech at the Democratic National Convention in Philadelphia last week has since dominated the US presidential election.
The father of Humayun Khan, a US soldier killed in Iraq, has been praised by many for his heartfelt and pointed words denouncing Donald Trump.
In this week's Headliner, Mehdi Hasan sits down with Khan to discuss the Republican nominee, the Iraq war, Islamophobia and his son.
Khan says he is confident that "Americans are not going to buy the snake oil [Trump] is selling.
"The moral dilemma in his candidacy is coming full circle," the 65-year-old Muslim American immigration lawyer from Pakistan says.
In the wide-ranging interview, Khan reveals he was opposed to the 2003 Iraq invasion - his son was killed in action the following year.
"That was a mistake that has not served American interest well," he tells Mehdi Hasan.
Khan also believes his son is supporting him in "every which way".
