From NPR News in Washington, I'm Lakshmi Singh.President Obama is out with a far-reaching plan to fight climate change.In a speech at Georgetown University, Obama announcedhis administration would launch the first-ever federal regulations to limit carbon dioxide emissions from existing power plants.He's also calling for a boost in renewable energy production on federal landsand means of preparing localities to address global warming.Republican critics in Congress call the president's proposals a job killer.Obama also shed more light today onhow his administration is deliberating the fate of the Keystone XL pipeline from Canada to Texas."Allowing the Keystone pipeline to be built requires a finding that doing so would be in our nation's interest.And our national interest will be served only if this project does not significantly exacerbate the problem of carbon pollution."The pipeline has been under review for more than four years.The US Supreme Court has struck down part of the Voting Rights Actthat had required federal monitoring of states with the history of racial discrimination.In a 5-4 ruling today,the justices said Congress needed to update its formulafor deciding which states and localities still require pre-approval before changing voting laws.NPR's Carrie Johnson has been following this case.Chief Justice John Robert writing for the majority said thatthe coverage formula under the Voting Rights Act of 1965 is unconstitutional
