article_snippet: authority from legislation such as the Clean Air Act and the .
article_snippet: Energy Independence and Security Act.
article_snippet: Agency (EPA) that target emissions in existing power plants.
article_snippet: By strenuously invoking EPA regulations, the Administration . is trying to convince skeptical international audiences that the .
article_snippet: emissions, and EPA is seeking to use EPA power to slash .
article_snippet: On Monday, EPA Administrator Gina McCarthy said EPA Administrator .
article_snippet: had designed power plant rules under the authority of the Clean .
article_snippet: Air Act - and insisted that they can withstand Supreme Court .
article_snippet: We plan A,' EPA Administrator Gina McCarthy .
article_snippet: administrator of EPA under George W Bush, says even if the .
article_snippet: courts uphold the EPA proposal on power plants, a future .
article_snippet: Environmental groups, on the other hand, were more confident .
article_snippet: The Clean Air Act has proven to be quite durable,' said .