Environmentalism under fire: Soaring emissions. The rhetoric about environmental controls killing jobs is getting louder and louder. is not it odd, asks Henry Waxman, a Democratic congressman from California, how the same Republicans who make such a fuss about abortion do not seem to care if the unborn are poisoned by toxic chemicals such as mercury? is not it strange, Republicans retort, that people like Mr Waxman, who profess to care about working Americans, cheer on bureaucrats determined to smother business and destroy jobs? It may be hard to discern amid the melodramatic rhetoric, but the two sides are talking about the Environmental Protection Agency, and the various new rules it has in the works to curb pollution. Besides the endless toing and froing about government spending, it has become the most fiercely debated topic in Congress. As soon as they took control of the House of Representatives in January, Republicans began summoning Lisa Jackson, the head of the EPA, and several of her underlings to answer questions about their job killing ways. Fred Upton, the head of the committee responsible for energy and environmental regulation, joked that she would be on Capitol Hill so often she would need her own parking space. The Republicans ' chief concern is the EPA's authority, as affirmed by the Supreme Court in 2007, to regulate emissions of greenhouse gases. But more broadly they worry that the EPA is constantly tightening restrictions on pollution, at ever higher cost to business but with diminishing returns in terms of public health.