Pub. L. 105–34, title XIV, § 1421(c), Aug. 5, 1997, 111 Stat. 1049, provided that: “The amendments made by this section [enacting this section] shall take effect on the 1st day of the 1st calendar quarter that begins at least 180 days after the date of the enactment of this Act [Aug. 5, 1997].”