Daniel Schearf SEOUL — On September 4, South Korea's parliament for the first time voted to prosecute one of its lawmakers for allegedly plotting to overthrow the government in favor of North Korea. The lawmaker and the North Koreans are denying the allegation and instead accusing South Korea's spy agency, the National Intelligence Service, of fabricating it for political purposes. Seoul's National Intelligence Service (NIS) last week arrested Lee Seok-ki and three other members of his Unified Progressive Party for treason and violating the National Security Law. The NIS alleges they plotted an armed rebellion against their own country in the event of war with…