If the crowd that erupted in applause when Kamala Harris showed up on Saturday Night Live this weekend was surprised by her appearance, they might have been the only ones. The instant that Air Force Two changed course midair to head to New York instead of Detroit, the jig was up. Lorne Michaels had said before SNL ’s season started that the presidential candidates wouldn’t appear on the show for fear of running afoul of the FCC’s equal time regulations, but the chance to grab the national