(13)As part of its duty to enforce compliance by its members, each NSE is responsible for investigating and disciplining any breaches of the Exchange Act and of the rules and regulations adopted thereunder. The SEC may also, at its discretion, investigate and prosecute any breaches of the Exchange Act and the rules and regulations adopted thereunder. The SRO rules are also subject to SEC review. Under Section 19(h) of the Exchange Act, the SEC can impose sanctions on SROs that have failed, without reasonable justification or excuse, to enforce compliance with any SRO rule by a member or person associated with a member.