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sot gupta obama _00002913
sot gupta obama _00002913

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    Obama: Air quality has dramatically improved

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Obama: Air quality has dramatically improved

President Obama tells CNN's Sanjay Gupta that air quality has "dramatically improved" after the Clean Air Act passed.

Obama: Air quality has dramatically improved

President Obama tells CNN's Sanjay Gupta that air quality has "dramatically improved" after the Clean Air Act passed.