Section 201(a)(3) of title 18, United States Code, is amended by striking “on any question,” and all that follows through the period at the end and inserting “on, or personal and substantial participation through, for example, approval, disapproval, recommendation, rendering of advice on, or investigation of any question, matter, cause, suit, proceeding or controversy, which may at any time be pending, or which may by law be brought before any public official, in such official’s official capacity, or in such official’s place of trust or profit.”.