y department or agency of the United States" if the department or agency has power to exercise authority in a particular situation. United States v. Ionia Mgmt. S.A., 526 F.Supp.2d 319, 329 (D. Conn. 2007), aff'd, 555 F.3d 303 (2d Cir. 2009). Here, there's no question that the matter is within the purview o