FILE - In this May 21, 2013 file photo, Senate Energy Committee Chairman Sen. Ron Wyden, D-Ore. speaks on Capitol Hill in Washington. Wyden says a website partially funded by the oil and gas industry ... more 
FILE - In this May 21, 2013 file photo, Senate Energy Committee Chairman Sen. Ron Wyden, D-Ore. speaks on Capitol Hill in Washington. Wyden says a website partially funded by the oil and gas industry is a constructive tool that could be used by federal regulators in requiring public disclosure of the chemicals used in hydraulic fracturing operations. (AP Photo/Charles Dharapak, File) less 
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Associated Press | Photo By Charles Dharapak, File
Thu, May 23, 2013 5:23 PM EDT