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https://ondemand.npr.org/anon.npr-mp3/npr/me/2019/09/20190918_me_trump_administration_to_revoke_californias_power_over_car_emissions.mp3?orgId=1&topicId=1025&d=253&p=3&story=761831591&ft=nprml&f=1003,1004,1007,1013,1014,1015,1017,1024,1025,1026,1059,1122,1150
NPR's David Green talks to law professor Jody Freeman, who is an ex-Obama staffer, about the expectation that the administration will revoke California's ability to set tighter environmental rules.
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