Pub. L. 112–239, div. C, title XXXI, § 3117(b), Jan. 2, 2013, 126 Stat. 2173, provided that: “The amendments made by subsection (a) [enacting this section] shall take effect on the date of the enactment of this Act [Jan. 2, 2013], and shall apply with respect to contractor performance evaluations conducted by the National Nuclear Security Administration on or after that date.”