Herman Cain tested the national spotlight Sunday as the Republican presidential primary’s newest front-runner. Facing tough questions during a 25-minute one-on-one interview on NBC’s "Meet the Press," Cain acknowledged that his plan to simplify the tax code would raise taxes for “some” people and clarified his position that he doesn’t believe abortion should be an option in instances of rape and incest. Scrapping the current federal tax code — which he described as a “10-million-word mess” — would eliminate a host of invisible taxes and eventually reduce prices, Cain said. Some economists have pointed out that Cain’s plan would shift...