如今有联邦法律保护，如《国家环境政策法案》和《濒危物种法》，会阻碍建坝。

Today a rampart of federal legislation, such as the National Environmental Policy Act and the Endangered Species Act, would block the way.

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然而，美参议院在七月已将环境政策从能源法案中移除，这也对奥巴马逐步解决美国能源政策的希望构成了威胁。

But Obama's hopes to tackle national energy policy bit by bit after the Senate removed climate measures from the energy bill in July may also be threatened.

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