; supervising ethics office The terms Member of Congress and supervising ethics office have the meaning given those terms in section 13101. (12) Qualified blind trust The term qualified blind trust means a qualified blind trust (as defined in section 13104(f)(3)) that has been approved in writing by the applicable supervising ethics office under section 13104(f)(3)(D). (13) Security The term security has the meaning given the term in section 3(a) of the Securities Exchange Act of 1934 ( 15 U.S.C. 78c(a) ). (14) Small business concern The term small business concern has the meaning given the term under section 3 of the Small Business Act ( 15 U.S.C. 632 ). 13162. Trading covered investments (a) Ban on trading Except as provided in subsections (b) and (c)— (1) effective on the date of enactment of the Ending Trading and Holdings In Congressional Stocks (ETHICS) Act , a Member of Congress shall not purchase any covered investment; (2) effective on the date that is 90 days after the date of enactment of the Ending Trading and Holdings In Congressional Stocks (ETHICS) Act , a Member of Congress shall not sell any covered investment, except as provided in section 13163(a)(2)