Secretary concerned
(2) the term “Secretary concerned” means— (A) the Secretary of Transportation, with respect to railroad safety matters concerning such Secretary under laws administered by that Secretary; and (B) the Secretary of Homeland Security, with respect to railroad safety matters concerning such Secretary under laws administered by that Secretary.
Source
49 USC § 20105(g)(2)
Scoping language
None identified. Default scope is assumed to be the entire title.