WASHINGTON (AP) - The Democrat-controlled Senate on Thursday rejected a Republican attempt to block a regulation intended to curb power plant pollution that blows downwind into other states. By a 56-41 vote, senators defeated a resolution by Sen. Rand Paul of Kentucky, who said the step was needed to rein in what he called the Obama administration's overzealous job-killing approach to environmental protection. "We are simply asking that the clean air regulations already on the books stay in place and we do not make the regulations so onerous that they put utility plants out of business and we have an...