This section, and § 160.101 of this subpart, issued pursuant to section 304 of the Federal Deposit Insurance Corporation Improvement Act of 1991, 12 U.S.C. 1828(o), prescribe standards for real estate lending to be used by Federal savings associations and all their includable subsidiaries, as defined in 12 CFR 3.22(a)(8)(iv) or 167.1, as applicable, over which the savings associations exercise control, in adopting internal real estate lending policies.