This subpart and § 19.8 apply to formal investigations initiated by order of the Comptroller and pertain to the exercise of powers specified in section 5240 of the Revised Statutes of the United States (12 U.S.C. 481); section 5(d)(1)(B) of the Home Owners' Loan Act (12 U.S.C. 1464(d)(1)(B)); sections 7(j)(15), 8(n), and 10(c) of the FDIA (12 U.S.C. 1817(j)(15), 1818(n), and 1820(c)); sections 4(b) and 13(a) and (b) of the International Banking Act of 1978 (12 U.S.C. 3102(b) and 3108(a) and (b)); and section 21 of the Exchange Act (15 U.S.C. 78u). This subpart does not restrict or in any way affect the authority of the Comptroller to conduct examinations into the affairs or ownership of national banks, Federal savings associations, Federal branches and agencies, and their affiliates.