Sen. Lisa Murkowski, the ranking member of the Senate Energy and Natural Resources Committee, is floating an amendment that could limit EPA’s efforts to regulate carbon dioxide emissions. The amendment to the EPA’s fiscal 2010 spending bill would limit the EPA to only regulating CO2 emissions from mobile sources. In effect, it allows the EPA to carry on with their recently proposed CAFE standards, but would essentially stall any efforts related to stationary sources, regarding which EPA is otherwise expected to issue regulations or guidance on in early 2010. The amendment would specifically prohibit the EPA from regulating CO2 emissions from power plants. The amendment would only be effective for one year if it is enacted.