WASHINGTON, Jan. 25 -- Sen. Markwayne Mullin, R-Oklahoma, issued the following news release: Yesterday, U.S. Senator Markwayne Mullin (R-OK) questioned Dr. Freedhoff, Assistant Administrator of the Office of Chemical Safety and Pollution Prevention (OCSPP) at the Environmental Protection Agency (EPA) during a Senate Environment and Public Works (EPW) Committee hearing to conduct oversight into the implementation of the Toxic Substances Control Act (TCSA). In his questioning, Mullin, the Ranking Member of the Chemical Safety, Waste Management, more PR