; (C) a Member of Congress, as defined in section 2106 of title 5, United States Code; (D) the Vice President; and (E) the President; (4) the term relative has the meaning given that term in section 3110 of title 5, United States Code; and (5) the term supervising ethics office has the meaning given that term in section 109 of the Ethics in Government Act of 1978 (5 U.S.C. App.). (b) Authorization for legal expense funds Subject to the limitations and regulations promulgated under this section, an officer or employee may establish, maintain, and use a legal expense fund. (c) Limits on contributions The Director of the Office of Public Integrity shall promulgate regulations establishing limits with respect to contributions to legal expense funds for officers or employees, which shall, at a minimum, prohibit an officer or employee from accepting contributions for a legal expense fund— (1) from a single contributor (other than a relative of the officer or employee) in a total amount of more than $5,000 during any calendar year; (2) from a registered lobbyist; (3) from an agent of a foreign principal; (4) from any person seeking official action from or doing business with the agency, office, or entity employing the officer or employee; (5) from any person conducting activities regulated by the agency, office, or entity employing the officer or employee; (6) from any person whose interests may be substantially affected by the performance or nonperformance of the official duties of the officer or employee