§1412. Definitions 
As used in this subchapter, the following words shall have the following meanings:   
1.  State.  "State" shall include any territory of the United States and District of Columbia.   
2.  Summons.  "Summons" shall include a subpoena, order or other notice requiring the appearance of a witness.   
3.  Witness.  "Witness" shall include a person whose testimony is desired in any proceeding or investigation by a grand jury or in a criminal action, prosecution or proceeding.