; or (ii) critical infrastructure as defined in Presidential Policy Directive 21 (February 12, 2013; relating to critical infrastructure security and resilience); and (B) may include variations for specific sectors or Government functions. 6019. Aviation workforce development (a) In general Section 625(c)(1) of the FAA Reauthorization Act of 2018 ( Public Law 115–254 ) is amended— (1) in subparagraph (C), by striking or after the semicolon; (2) in subparagraph (D), by striking the period and inserting ; or ; and (3) by adding at the end the following: (E) an organization representing aircraft users, aircraft owners, or aircraft pilots. . (b) Effective Date The amendments made by subsection (a) shall take effect as if included in the enactment of the FAA Reauthorization Act of 2018 ( Public Law 115–254 ). 6020. Little Shell Tribe of Chippewa Indians of Montana (a) Findings Congress finds that— (1) the Little Shell Tribe of Chippewa Indians is a political successor to signatories of the Pembina Treaty of 1863, under which a large area of land in the State of North Dakota was ceded to the United States; (2) the Turtle Mountain Band of Chippewa of North Dakota and the Chippewa-Cree Tribe of the Rocky Boy’s Reservation of Montana, which also are political successors to the signatories of the Pembina Treaty of 1863, have been recognized by the Federal Government as distinct Indian tribes; (3) the members of the Little Shell Tribe continue to live in the State of Montana, as their ancestors have for more than 100 years since ceding land in the State of North Dakota as described in paragraph (1); (4) in the 1930s and 1940s, the Tribe repeatedly petitioned the Federal Government for reorganization under the Act of June 18, 1934 ( 25 U.S.C. 5101 et seq.) (commonly known as the Indian Reorganization Act )