The state securities administrator has the authority to enforce all of the provisions of the Uniform Securities Act (USA) within their state. The state securities administrator may deny, revoke, or suspend the registration of a security, an agent, or a firm. The administrator may also revoke an exemption from registration, subpoena and investigate any registrant, and amend rules as required. The North American Securities Administrators Association or NASAA is the oldest investor protection organization in the country and represents the interest of all of the state securities administrators. NASAA also writes policies and administers the Series 63, 65, and 66 exams.