As Nancy Pelosi struggles to beat back an insurgency by her House Democratic colleagues over a string of election losses, there are new questions over her health after she suffered multiple brain freezes during a recent appearance in New York City. During a Sunday event at the 92nd Street Y, Pelosi would awkwardly stop mid-sentence repeatedly, stare at the audience, and then continue speaking. Speaking about her father, Pelosi said, “He was part of a group called the Berkson Group and they did rallies and pageants and parades and um, and when he stood up on the floor of Congress,...