3 U.S. Code § 453
3 U.S. Code § 453 is about Election of proceeding. It is under Subchapter 3 (Administrative And Judicial Dispute Resolution Procedures) of Chapter 5 (Extension Of Certain Rights And Protections To Presidential Offices) of Title 3 (The President) of the Code.
Not later than 90 days after a covered employee receives notice of the end of the period of mediation, but no sooner than 30 days after receipt of such notification, such covered employee may either—
(1)file a complaint with the appropriate agency, as determined under section 454; or
(2)file a civil action under section 1346(g) of title 28.