In a positive step forward for federal respect for state regulatory powers, President Obama directed the Environmental Protection Agency  (EPA) to reconsider a previously denied waiver to allow California to implement auto emissions  and fuel efficiency requirements that go beyond the current federal standards. In a statement by the White House, President Obama said  "the federal government must work with, not against, states to reduce greenhouse gas emissions." The directive represents not only greater respect for state authority, but also a sharp break  from the previous administrations climate policies.
If granted a waiver by the EPA, California's proposed regulations  would result in an average reduction of greenhouse gas emissions of about 22% by 2012 and about 30% by 2016 for new cars and light trucks in the state. The Federal Clean Air Act gives California a special right to apply for a federal waiver that allows the state to implement vehicle emission standards that are tougher than those of the federal government. Although in the past waivers have been readily granted, California tried for most of the Bush presidency  to obtain a federal waiver to no avail.
If California is granted a waiver to impose higher standards than the federal government does, other states may choose to adopt California's more stringent standards. According to the New America Foundation, to date, 17 other states  (Arizona, Connecticut , Maine , Maryland , Massachusetts , New Mexico, New Jersey , New York , Oregon , Pennsylvania , Rhode Island , Vermont , and Washington ) "have adopted or have announced plans to adopt " California's standards. Other states such as Colorado, Minnesota, Montana, North Carolina, and Utah are currently considering proposals regarding the adoption of California standards.