Julie Platt, with her actor son Ben Platt, attend the 2017 Tony Awards at Radio City Music Hall in New York City. (Jenny Anderson/Getty Images for Tony Awards Productions) WASHINGTON (JTA) — Julie Platt is a one-time banker who has become a leader in promoting Jewish education and helping to rescue Jewish camping from the ravages of the pandemic. Now, she’s about to make history as the second woman to chair one of the largest Jewish fundraising powerhouses in the United States, the Jewish Federations of North America. She’s also musical star Ben Platt’s mom. The JFNA on Tuesday said...