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William Wehrum appears before the United States Senate Committee on Environment and Public Works to testify on his nomination as the assistant administrator for the Office of Air and Regulation at the Environmental Protection Agency (EPA) on Capitol Hill in Washington, DC on Wednesday, October 4, 2017. Credit: Ron Sachs / CNP ...- NO WIRE SERVICE _ Photo: Ron Sachs/Consolidated/dpa | usage worldwide (KEYSTONE/DPA/Ron Sachs)