6 U.S.C. § 201 : Domestic Security — Homeland Security Organization — Directorate Of Border And Transportation Security — Under Secretary For Border And Transportation Security — Under Secretary For Border And Transportation Security
There shall be in the Department a Directorate of Border and Transportation Security headed by an Under Secretary for Border and Transportation Security.
(Pub. L. 107–296, title IV, § 401, Nov. 25, 2002, 116 Stat. 2177.)