It is time for Congress to reassess the RFS and rewrite its requirements to match both the technical feasibility and market economics that currently prevail. Rewrite RFS Brazilian sugarcane ethanol makers are upset over a renewed U.S. Congressional effort to stipulate only domestically-produced ethanol eligible for fulfilling the requirements of the Renewable Fuel Standard (RFS). Currently, the U.S. imports ethanol from Brazil made from sugarcane and permits it to fulfill the fuel blending requirement in the advanced biofuel category. Allowing only domestically-produced biofuel for this purpose most likely violates U.S. obligations under the WTO, although there is a larger issue at stake. Sugarcane may offer better greenhouse gas benefits...