; and (2) if the Commission determines appropriate, create an Office of Venture Exchanges within the Commission’s Division of Trading and Markets. (d) Rule of construction Nothing in this section or the amendments made by this section shall be construed to impair or limit the construction of the antifraud provisions of the securities laws (as defined in section 3(a) of the Securities Exchange Act of 1934 ( 15 U.S.C. 78c(a) )) or the authority of the Securities and Exchange Commission under those provisions. (e) Effective date for tiers of existing national securities exchanges In the case of a securities exchange that is registered as a national securities exchange under section 6 of the Securities Exchange Act of 1934 ( 15 U.S.C. 78f ) on the date of the enactment of this Act, any election for a listing tier of such exchange to be treated as a venture exchange under subsection (m) of such section shall not take effect before the date that is 180 days after such date of enactment.