EPA chief Lisa Jackson perpetually on Capitol Hill hot seat

House Republicans have been challenging EPA Administrator Lisa Jackson on whether carbon dioxide is a pollutant, in hearings aimed at cutting the agency's budget and curbing its ability to regulate greenhouse gases.

Source: http://www.washingtonpost.com/wp-dyn/content/article/2011/03/13/AR2011031303340.html?wprss=rss_politics

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