### Question
What is the definition of security background check?


### Answer
The definition of **security background check** is as follows in *6 U.S.C. § 1143*:

> reviewing the following for the purpose of identifying individuals who may pose a threat to transportation security, national security, or of terrorism:


(A) Relevant criminal history databases

#### Citation:
  - *6 U.S.C. § 1143*
  - Heading: **CHAPTER 4-TRANSPORTATION SECURITY > SUBCHAPTER III-PUBLIC TRANSPORTATION SECURITY**

