President Obama abruptly pulled back proposed new national smog standards Friday morning, overruling the Environmental Protection Agency’s efforts to compel states and communities nationwide to reduce local air pollution in the coming years or face federal penalties. The move represented a win for the business community, which had lobbied to postpone new restrictions on ground-level ozone—known as smog—until 2013 in light of the current economic downturn. In a statement, Obama praised EPA administrator Lisa P.