An investment adviser registered under this subchapter shall take such steps to safeguard client assets over which such adviser has custody, including, without limitation, verification of such assets by an independent public accountant, as the Commission may, by rule, prescribe.
15 U.S. Code § 80b–18b. Custody of client accounts
Section effective 1 year after July 21, 2010, except that any investment adviser may, at the discretion of the investment adviser, register with the Commission under the Investment Advisers Act of 1940 during that 1-year period, subject to the rules of the Commission, and except as otherwise provided, see section 419 of Pub. L. 111–203, set out as an Effective Date of 2010 Amendment note under section 80b–2 of this title.