Pub. L. 106-74, tit. IV, sec. 426

Sec. 426. Except in the case of entities that are funded solely with Federal funds or any natural persons that are funded under this Act, none of the funds in this Act shall be used for the planning or execution of any program to pay the expenses of, or otherwise compensate, non-Federal parties to lobby or litigate in respect to adjudicatory proceedings funded in this Act. A chief executive officer of any entity receiving funds under this Act shall certify that none of these funds have been used to engage in the lobbying of the Federal Government or in litigation against the United States unless authorized under existing law.