Except as otherwise specifically provided in the Immigration and Nationality Act and this chapter, aircraft arriving in or departing from the continental United States or Alaska directly from or to foreign contiguous territory or the French island of St. Pierre or Miquelon shall be regarded for the purposes of the Immigration and Nationality Act and this chapter as other transportation lines or companies arriving or departing over the land borders of the United States.
8 C.F.R. §234.3