The group’s summit, held annually at The Venetian Expo, the late casino magnate and GOP donor Sheldon Adelson’s convention center, occurs this year as the Republican Party is facing a barrage of pro-Nazi and pro-Hitler incidents within its ranks. Last month, a nominee to lead the Office of Special Counsel withdrew his nomination after bragging of his “Nazi streak” in a text message; days earlier, POLITICO reported on a leaked group chat of Young Republicans who praised Hitler and joked about the Holocaust. The same week, a Nazi symbol was discovered hanging in a GOP Congressional office. Then, this week,...