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Once again:
ArtII.S2.C2.3.6 Creation of Federal Offices
The Constitution gives Congress substantial power to establish federal government offices. As an initial matter, the Constitution vests the legislative power in Congress.1 Article I bestows on Congress certain specified, or enumerated, powers.2 The Court has recognized that these powers are supplemented by the Necessary and Proper Clause, which provides Congress with broad power to enact laws that are ‘convenient, or useful’ or ‘conducive’ to [the] beneficial exercise of its more specific authorities.3 The Supreme Court has observed that the Necessary and Proper Clause authorizes Congress to establish federal offices.4 Congress accordingly enjoys broad authority to create government offices to carry out various statutory functions and directives.5 The legislature may establish government offices not expressly mentioned in the Constitution in order to carry out its enumerated powers.6
https://constitution.congress.gov/browse/essay/artII-S2-C2-3-6/ALDE_00000012