According to §313.6(C)(1) of the Compendium of U.S. Copyright Office Practices, Third Edition: “[T]he bar on copyright protection for federal works ... applies to works created by all federal ‘officer[s] or employee[s],’ without regard for the nature of their position or scope of their authority.” Georgia v. Public.Resource.Org, Inc., 140 S. Ct. 1498, 1509-10 (2020). This includes works created by the President; Congress; the federal judiciary; federal departments, agencies, boards, bureaus, or commissions; or any other officer or employee of the U.S. federal government while acting within the course of his or her official duties. It also includes works prepared by an officer or employee of the government of the District of Columbia, the Commonwealth of Puerto Rico, or the organized territories under the jurisdiction of the federal government.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.