Unverified50% confidenceFactExact time
The U.S. Clean Air Act was originally signed into law by President Nixon in 1970 and was last significantly amended in 1990 under President George H. W. Bush.
1
Sources
50%
Confidence
Long-term
Relevance
8/5/2026
First Seen
Sources
EPA政策争议：数据中心供电设施或可规避污染排放法规
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