Northern Virginia from the older National Airport (a focus city for American Airlines) are restricted for distance, frequency, and flight paths due to the proximity to federal facilities, Dulles is the region's second busiest airport in both passenger loadings and aircraft movements, and the sixteenth-busiest airport in the United States by takeoffs and landings in 2007. Dulles is the region's primary international gateway, serves as a hub for United Airlines, and has recently improved its low-cost carrier offerings with the addition of multiple flights by Southwest and JetBlue. Commuters are served by the Washington Metro subway and the Virginia Railway Express, a
Nishikawa v. Dulles findings on Nishikawa's credibility. Nishikawa v. Dulles Nishikawa v. Dulles, 356 U.S. 129 (1958), is a United States Supreme Court case in which the Court ruled that a dual US/Japanese citizen who had served in the Japanese military during World War II could not be held to have lost his US citizenship unless the United States could prove that he had acted voluntarily. Mitsugi Nishikawa, born in California to Japanese parents, went to Japan to study, and he was conscripted into the Japanese military in early 1941. After the end of the war, Nishikawa was informed by US officials that