CNN: Nearly 30 senators staged an overnight debate on the Senate floor Monday night through Tuesday morning, trying to bring attention to what they say is a dire need to combat climate change with legislative action.
But Sen. Mary Landrieu, the new chairman of the Senate Energy and Natural Resources Committee, was noticeably absent from the demonstration. The vulnerable Democrat faces re-election this fall in Louisiana, a state with large swaths of conservative voters.
The National Republican Senatorial...