(CNN) - A key backer of Hillary Clinton's White House bid gave her top strategist Mark Penn a less than ringing endorsement Sunday, following news Penn had met with the Colombian ambassador to promote a free trade agreement the New York senator opposes.
Appearing on NBC's Meet the Press, Pennsylvania Gov. Ed Rendell didn't exactly give the longtime Clinton pollster a vote of confidence.
Asked directly if the campaign should cut ties with Penn, Rendell said, "Well there are a lot of issues in which you can raise that question."
"Yeah, I think you've got to make it very clear for someone who is a consultant, who you are representing and who you are not representing and I would hope that Mr. Penn when he talked to the Colombians made that clear," Rendell also said. "And it doesn't sound to me like he did and that's something the campaign should take into question."
Late last week it was reported by the Wall Street Journal that Penn had met with the Colombian ambassador on Monday to promote a free trade agreement that Hillary Clinton has sharply criticized on the campaign trail. Penn's P.R. firm Burson-Marsteller had a contract with Colombia to promote the agreement, though a spokesman for Colombia's president told the paper he didn't know if Penn was representing Clinton or his P.R. firm in the meeting.
On Friday, Penn said he was acting in his role as CEO of Burson-Marsteller and called the meeting a "error in judgment." Upset with that characterization, the Colombian government cut ties with Penn's firm on Saturday.