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 Rankin more PR