AP sources: After tabling similar proposal, Obama to propose a stricter smog standard

Coming full circle on a campaign promise, the Obama administration will propose Wednesday to reduce the amount of smog-forming pollution allowed in the air, which has been linked to asthma, lung damage and other health problems. The stricter standard makes good on a pledge President Barack Obama made during his first campaign for the White House and one of his first environmental actions as president: reversing a decision by President George W. Bush to set a limit weaker than scientists advised.

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