Donald Trump escalated his feud with Republican Arizona Sen. John McCain Saturday in a way that probably wasn’t the most politically astute.Appearing at the 2015 Family Leadership Summit in Iowa, Trump decided to make the case that McCain is not a war hero. Asked by moderator Frank Luntz why he would call a war hero like McCain a “loser,†Trump replied, “He’s not a war hero.â€â€œHe’s a war hero because he was captured,†Trump said sarcastically. “I like people who weren’t captured, I hate to tell you.â€McCain spent five and a half years in a North Vietnamese prison where he...