5 U.S.C. § 2303
INDIVIDUAL RIGHT OF ACTION PRESERVED FOR AMOUNTS NOT OTHERWISE PROVIDED FOR UNDER THIS TITLE.
“Nothing in this title shall preclude an individual from bringing a claim against the Government of the United States which such individual may have under section 1346(b) or chapter 171 of title 28, United States Code, or any other provision of law (except to the extent the claim is for any amounts otherwise provided for under this title).