New York Times: As we’ve reported, the State Department is considering whether to approve a huge new pipeline called Keystone XL that will bring crude from Canada’s oil sands all the way to the Gulf of Mexico. A new pipeline would vastly expand the amount of oil extracted from Canadian oil sands that is used in the United States – which could be good in terms of energy security. But environmental groups contend that this oil comes with an unacceptable array of environmental problems, from a …