2 U.S.C. § 1613 — Prohibition on provision of gifts or travel by registered lobbyists to Members of Congress and to congressional employees

(a) Prohibition A person described in subsection (b) may not make a gift or provide travel to a covered legislative branch official^* if the person knows that the official may not accept the gift or travel under the Rules of the House of Representatives or the Standing Rules of the Senate, as applicable. This section does not define “covered legislative branch official.” (b) Persons subject to prohibition The people covered by subsection (a) are: any lobbyist^* who is registered or must register under section 1603(a)(1) of this title; any organization^* that employs one or more lobbyists and is registered or must register under section 1603(a)(2) of this title; and any employee^* whom a registrant lists, or must list, as a lobbyist under section 1603(b)(6) or 1604(b)(2)(C) of this title.