A member bank may extend credit to any executive officer, director, or principal shareholder, or to any related interest of such a person, only if the extension of credit is in an amount that, when aggregated with the amount of all outstanding extensions of credit by that bank to that person and that person’s related interests, would not exceed the limits on loans to a single borrower established by section
84 of this title. For purposes of this paragraph, section
84 of this title shall be deemed to apply to a State member bank as if the State member bank were a national banking association.