This Nov. 19, 2014, file photo shows EPA Administrator Gina McCarthy speaking to the Center for American Progress’ Second Annual Policy Conference in Washington. The Obama administration took steps Wednesday to cut levels of smog-forming pollution linked to asthma, lung damage and other health problems, making good on one of President Barack Obama's original campaign promises while setting up a fresh confrontation with Republicans and the energy industry. (AP Photo/Manuel Balce Ceneta, File)FILE -
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