The White House has completed its review of controversial U.S. EPA regulations aimed at curbing renewable fuels' greenhouse gas emissions. The Office of Management and Budget signed off on the rule yesterday, OMB records show, clearing EPA to finalize the long-delayed implementation of the renewable fuels standard that Congress included in the 2007 energy bill. The bill expanded the renewable fuels standard and set escalating goals for the use of ethanol and other biofuels in U.S. transportation fuels, reaching 36 billion gallons a year in 2022. Go to story #1