(CNN) - The Colombian government severed ties with Clinton strategist Mark Penn and his public relations firm Saturday, unhappy Penn referred to a recent meeting with the Colombian ambassador as an "error in judgment."
"Mr. Mark Penn, President and CEO of Burson Marsteller, responded to claims by Union representatives who questioned his relationship with the Colombian Government by declaring that it was an 'error in judgment' to meet with his client the Colombian Ambassador on March 31. The Colombian government considers this a lack of respect to Colombians, and finds this response unacceptable," a statement from the Colombian embassy said.
Penn's comments came Friday after it was reported he had met with the Colombian ambassador in his role as CEO of his P.R. firm to promote a free trade agreement with the country that Hillary Clinton has sharply criticized on the campaign trail.
"The meeting was an error in judgment that will not be repeated and I am sorry for it," Penn said in an issued statement. "The senator's well known opposition to this trade deal is clear and was not discussed," Penn said in a statement.
The meeting, first reported by the Wall Street Journal, occurred Monday. The Colombian Embassy hired Penn's firm in 2007 to help achieve congressional approval of the trade agreement signed in 2006 by Colombian President Alvaro Uribe and the Bush administration.
Change to Win, a union federation that has endorsed Barack Obama and represents more than 6 million workers, immediately called on Clinton to fire Penn, saying " It’s time for [her] to send her vaunted ‘chief strategist’ Mark Penn packing - back to his job consulting for union busting corporations and anti-labor governments for good.
On Friday, Clinton spokesperson Mo Elleithee said the New York senator "remains steadfast against the Colombian Trade Bill," and maintained Penn's meeting was "not in any way done on behalf of the campaign."
Clinton has sharply criticized America's free trade agreements as she campaigns for the Democratic presidential nomination, and was particularly critical of rival Barack Obama in February when it was reported that one of his chief foreign policy advisors had suggested to a Canadian official that the Illinois senator was not as anti-free trade as he was claiming to be on the trail.
"I don't think people should come to Ohio and tell the people of Ohio one thing and then have your campaign tell a foreign government something else behind closed doors," Clinton said then. "That's the kind of difference between talk and action and that I've been pointing out in this campaign."
"I would ask you to look at that story, substitute my name for Senator Obama," she also said. "If some of my advisers had been having private meetings with foreign governments and basically saying ignore what I'm saying because it's only political rhetoric … I think it raises serious questions."
- CNN's Juan Carlos Lopez, Alex Mooney and Mike Roselli contributed to this report