U.S. Senator Hillary Clinton [3]'s top presidential campaign [4] strategist is Mark Penn [5], worldwide CEO of the PR firm Burson-Marsteller [6] and president of the polling firm Penn, Schoen and Berland Associates [7]. While the campaign says Penn "is currently working only with Microsoft [8]" for his day job, an internal Burson-Marsteller blog "suggests ... he has been working with multiple clients," reports Bloomberg News [9]. Blog posts by Penn mention work for Shell Oil [10], the energy company TXU [11], and the U.S. Tuna Foundation [12]. In one post, Penn says "the mixing of corporate and political work" is "helpful in cross-pollinating new ideas and skills." The Nation [13] notes Burson-Marsteller's astroturf [14] "attacks against environmental and consumer groups," and its "confrontational relationship with organized labor," as well as Penn's polling firm's work for the nuclear power industry [15] (which the Center for Media and Democracy previously reported on [16]). AP reports [17] that Colombia [18] recently hired Burson-Marsteller on a $300,000-per-year contract, to "educate members of the U.S. Congress and other audiences" on "free trade" issues and Plan Colombia [19], a U.S. backed counter-narcotics program criticized by human rights groups. Colombia will also honor former president Bill Clinton [20] "at a gala event next month in New York City." Her campaign said Hillary will not attend. The Colombian government's links to paramilitary groups led Al Gore [21] to avoid an environmental conference last month that Colombian president Alvaro Uribe attended.