The Union of Concerned Scientists [3]' new report, "Interference at the EPA: Science and Politics at the U.S. Environmental Protection Agency [4]," calls the U.S. Environmental Protection Agency [5] "an agency under siege from political pressures. On numerous issues -- ranging from mercury pollution to groundwater contamination to climate change [6] -- political appointees have edited scientific documents, manipulated scientific assessments, and generally sought to undermine the science behind dozens of EPA [7] regulations." The study found the White House Office of Management and Budget [8] to be the worst culprit. A stunning "889 scientists (60 percent of respondents) personally experienced at least one incident of political interference during the past five years," while "among EPA veterans (scientists with more than 10 years of experience at the agency), 409 (43 percent) said interference occurred more often in the past five years than in the previous five-year period." One EPA scientist warned: "Do not trust the Environmental Protection Agency to protect your environment. Ask questions. Be aware of political and economic motives. Become politically active. Elect officials with motives to protect the environment and hold them accountable."