1. Short title; definition (a) Short title This Act may be cited as the Colorado Wilderness Act of 2018 . (b) Secretary defined As used in this Act, the term Secretary means the Secretary of the Interior or the Secretary of Agriculture, as appropriate. 2. Additions to national wilderness preservation system in the State of Colorado (a) Additions Section 2(a) of the Colorado Wilderness Act of 1993 ( Public Law 103–77 ; 107 Stat. 756