Newly minted White House press secretary Katie Zacharia wasted no time taking up her position at the briefing room podium on Tuesday. Arguably, she might have benefited from doing some more preparation before entering the lion’s den a mere four days after her appointment was officially unveiled. Her appearance lasted just 13 minutes, most of which was taken up with relentlessly touting “hard-working Americans … lining up and packing arenas to support President Trump” as he campaigns for Republican candidates three weeks before the midterm elections. “We are in the middle of a midterm blitz with energy and excitement never...