Reuters: The Obama administration this week will propose new fuel efficiency and emissions requirements for cars and light trucks for model years 2017 and beyond. The plan, a centerpiece of President Barack Obama’s energy agenda geared toward reducing oil imports, is under review by the White House budget office. It is due on Thursday, but could be released sooner, Leading environmental groups have called on the administration to set a target of 60 miles per gallon by 2025 but officials …