The House Energy and Commerce Committee is continuing its review of the Renewable Fuel Standard (RFS). Last week it released a third white paper on greenhouse gas (GHG) emissions and other environmental impacts. To date, the committee has issued one on the blend wall (see WPI 22 March) and one on food and feed versus fuel (see WPI 25 April).For each paper, the committee issue questions, circulates them widely among all stakeholders and provides a 60-day comment period. From the responses, the committee staff generates a white paper that will serve to try to define the key issues.The latest paper includes the following questions: Is the RFS reducing GHG emissions below that of baseline petroleum-derived fuels? Is the RFS incentivizin...