Except as otherwise specified in section
9125 of this title, the district courts of the United States shall have exclusive original jurisdiction over any case or controversy arising under the provisions of this chapter. Except as otherwise specified in this chapter, venue shall lie in any district wherein, or nearest to which, the cause of action arose, or wherein any defendant resides, may be found, or has his principal office. In the case of Guam, and any Commonwealth, territory, or possession of the United States in the Pacific Ocean, the appropriate court is the United States District Court for the District of Guam, except that in the case of American Samoa, the appropriate court is the United States District Court for the District of Hawaii. Any such court may, at any time—