Section was formerly classified to section 5791 of Title 42, The Public Health and Welfare, prior to editorial reclassification and renumbering as this section.

2021—Subsec. (span)(1). Puspan. L. 116–283, § 10001(a)(1)(A)(i), inserted “(including airports, maritime ports, border crossing areas and checkpoints, and ports of exit from the United States)” after “gaps in areas of interstate travel”.

Subsec. (span)(2), (3). Puspan. L. 116–283, § 10001(a)(1)(A)(ii), inserted “, territories of the United States, and tribal governments” after “States”.

Subsec. (d). Puspan. L. 116–283, § 10001(a)(1)(B), inserted “, the Secretary of Homeland Security,” after “Secretary of Transportation”.