Agency
Agency means an executive agency as defined at 5 U.S.C. 105, including the U.S. Postal Service and the U.S. Postal Rate Commission; a military department as defined at 5 U.S.C. 102; an agency or court in the judicial branch; an agency of the legislative branch, including the U.S. Senate and House of Representatives; and other independent establishments that are entities of the Federal government.
Source
45 CFR § 607.2
Scoping language
For the purposes of this part the following definitions will apply: