And Americans thought Kamala Harris was the embarrassing half of the couple. It turns out, the vice president’s husband, second gentleman Doug Emhoff, has a talent for humiliating himself and his country that could rival his wife’s empty-headed blather. On Monday, he proved it with a social media post that botched the story of Hanukkah so badly it had to be taken down — but the damage was already done. In the now-deleted post, Emhoff wrote what he apparently thought was the story of one of Judaism’s best-known holidays, and in the process turned an epic victory of military power and persevera…