Hill: Two-thirds of United States residents support the Environmental Protection Agencys (EPA) proposal to reduce power plants carbon dioxide emissions, according to a poll released Wednesday by NBC News and the Wall Street Journal. The survey found that 37 percent of respondents strongly support EPAs proposal unveiled June 2, and 30 somewhat support it. Twenty-nine percent oppose it, the poll found. More generally, 57 percent of respondents said theyd approve of a policy that would reduce greenhouse...