The White House hosted Jewish leaders Wednesday to discuss what the Jewish husband of Vice President Kamala Harris called an “epidemic” of anti-Semitism in the United States. Douglas Emhoff, whose official title is second gentleman, headlined the roundtable for a range of Jewish community leaders. With Harris the first woman ever in the vice presidency, Emhoff is not only the first man to be in the spousal role, but also the first Jew. “Our community is in pain,” he said, referring to a spate of anti-Semitic incidents around the country and also the high-profile association between former pres…