The Obama administration is extending its review of the Keystone XL pipeline, citing ongoing litigation in Nebraska over the project’s route through the state, according to people familiar with the matter. The State Department is allowing more time for government agencies to weigh in on the project–a review process that was expected to end in early May, State Department officials told congressional staff on Friday. It is unclear how much more time the State Department will allow for input, but it is likely to push a final decision on the pipeline–which has been under review by the Obama administration for more than five years–until after November’s midterm elections. TransCanada Corp. wants to send oil through a pipeline from Canadian oil sands to Gulf Coast refineries in the U.S. The pipeline project has stirred opposition from environmental groups, which warn it could lead to oil spills and […]