The PR firm Burson-Marsteller [3]'s anti-union consulting continues to haunt Sen. Hillary Clinton [4]'s presidential campaign [5]. That's because Mark Penn [6], a top campaign aide, also heads Burson-Marsteller (B-M). On August 7, Clinton and other Democratic presidential candidates addressed an AFL-CIO [7] candidate forum, hoping for their endorsement, along with "brigades of union workers to knock on doors, drive people to the polls, and staff phone banks." Penn says that he hasn't taken part in anti-union work, but his role at B-M is "very, very problematic to the AFL-CIO, as well as to many other unions," said the AFL-CIO's political director. Teamsters president James Hoffa agreed, saying, "As long as Mark Penn continues to profit from his company's involvement with anti-union companies, this issue will not go away."