US tightens smog limits in bid to protect health

FILE - 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)WASHINGTON (AP) — In a fresh confrontation with Republicans, the Obama administration on Wednesday proposed stricter emissions limits on smog-forming pollution linked to asthma and respiratory illness. The move fulfilled a long-delayed campaign promise by President Barack Obama but left environmental and public health groups wanting more.

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