As they should. This stuff about the Kahn family is not important in the larger scheme of things.
Trump will do BOTH, it is not one or the other.
I have the same reaction. Trump sent a clear message that if you come out and take me on you will be vetted, thoroughly. The consequence was that Khizr Khan was found out for what he is - a trafficker in underpriced "business investment" visas, has taken down his website and had to hide underground.
Which rent-seeker in the great Democratic global sellout is up next to take on Trump? Come on - who is next? Going once, going twice next.