Witnesses testified at an oversight hearing on the Environmental Protection Agency. The hearing focused on the revised air quality standards for ozone issued by EPA on March 12, 2008, and how political considerations influenced the decisions. The standards disregard the advice of the EPA staff and Clean Air Scientific Advisory Committee. Topics included the denial of California’s efforts to reduce CO2 emissions from motor vehicles, the rejection of the EPA’s proposed greenhouse gas rules, and the delay in the issuance of regulations to protect whales.