Sarah Sanders said in today's White House press briefing that Chief of Staff Gen. John Kelly is "disgusted and frustrated" by the way his son's death has become politicized.

Why it matters: It was President Trump who first mentioned Kelly's son, when he told Brian Kilmeade on Fox News Radio to ask Gen. Kelly if he ever got a call from President Obama after his son was killed in Afghanistan in 2010.

Q Sarah, did the President speak to his Chief of Staff, General John Kelly, before invoking his son's death in what has become a political argument?

MS. SANDERS: I know he's spoken to General Kelly multiple times yesterday and today.

Q On this very topic? In other words, did General Kelly know he would be raising the issue of his son's memory when talking about the outreach?

MS. SANDERS: I'm not sure if he knew of that specific comment, but they had certainly spoken about it, and he's aware. And they've spoken several times since then.

Q So can you describe how General Kelly feels about it? Is he comfortable with the way his son's memory has been --

MS. SANDERS: I think that General Kelly is disgusted by the way that this has been politicized and that the focus has become on the process and not the fact that American lives were lost. I think he's disgusted and frustrated by that. If he has any anger, it's towards that.