奥巴马再三表示，最好是由议会负责管理污染气体排放的工作，而不用EPA在《清洁空气法案》下对其进行管制。 最高法院也曾表示议会能担当此任。

Mr Obama has repeatedly argued that it would be better for Congress to take charge of emissions than for the EPA to regulate them under the Clean Air Act, as the Supreme Court has said it can.

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为了预防类似土壤污染的发生，废水处理公司在进行工作时必须负起责任，了解污泥的质量所将带来的影响和管制废水中有毒物质的排放。

Preventing such pollution will require waste water companies to have a responsibility for sludge quality and powers to know about and control toxic discharges to the sewers that run to their works.

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