Senator Hillary Clinton’s chief campaign strategist Mark Penn has stepped down just days after it was revealed that he had been hired by the Colombian government to help lobby for a new trade deal with Washington. It is unclear what role Penn will retain in the campaign. His polling firm will continue to provide polling and advice to Clinton. On Friday, several labor leaders called for Penn’s resignation after the Wall Street Journal reported that he had met with Colombia’s ambassador to help craft a strategy to secure passage of the Colombian Free Trade deal, which Clinton has opposed. Teamsters president James Hoffa said, “How can we trust that a President Hillary Clinton would stand strong against this trade deal when her top adviser is being paid by Colombia to promote it?” It is not the first time Mark Penn’s business deals at the firm Burson-Marsteller have come under scrutiny. Other clients of Penn’s have included the mortgage lender Countrywide Financial, the mercenary firm Blackwater and Philip Morris.