What states rights?

Republicans claim to be for "states rights", but they only seem to feel that way in support of evil, such as segregation.

http://environment.about.com/b/2009/01/26/obama-orders-epa-to-reconsider-california-waiver-on-greenhouse-gas-emissions.htm

Obama Orders EPA to Reconsider California Waiver on Greenhouse Gas Emissions
Monday January 26, 2009

U.S. President Barack Obama has ordered the Environmental Protection Agency (EPA) to reconsider its decision to deny California a waiver under the Clean Air Act, which would have enabled California and 17 other states to impose stricter-than-federal limits on greenhouse gas emissions from motor vehicles.

Decision to Deny California Waiver Unprecedented
Under President Bush, the EPA denied California’s request for the waiver in December 2007, shortly after a federal court upheld the California law and the state’s right to regulate greenhouse gas emissions that contribute to global warming. It was the first time the EPA had ever denied a request for a Clean Air Act waiver, a move that prompted California to sue the agency.