### Question
What does investigation mean?


### Answer
**Investigation** has the following meaning in *50 U.S.C. § 3235*:

> any inquiry, whether formal or informal, into the existence of an unauthorized public disclosure of classified information

#### Citation:
  - *50 U.S.C. § 3235*
  - Heading: **CHAPTER 44-NATIONAL SECURITY > SUBCHAPTER IX-ADDITIONAL MISCELLANEOUS PROVISIONS**

