Elizabeth Williamson, reporter for The Wall Street Journal covering national politics, discusses the latest comments made by Donald Trump discrediting John McCain's military service and the looming battle in Congress regarding the Iran nuclear deal. 

Now: discussing @realDonaldTrump's comment about John McCain: “He’s a war hero because he was captured. I like people who weren’t captured.”

— Brian Lehrer Show (@BrianLehrer) July 20, 2015

McCain's fighter plane was shot down. To dispute his heroism is "just pure, rhetorical…" @wsjliz searches for the word: "…Trumpism!"

— Brian Lehrer Show (@BrianLehrer) July 20, 2015

On #IranDeal: very tough atmosphere in Congress, even among the Dems, says @wsjliz. @SenSchumer has said he'll read closely before deciding.

— Brian Lehrer Show (@BrianLehrer) July 20, 2015