What is the fine-grained topic of the following text: NEW YORK (DTN) -- The American Petroleum Institute's Downstream Group Director Frank Macchiarola on Tuesday said policymakers should repeal or significantly reform the Renewable Fuel Standard, a federal mandate that requires an increasing volume of renewables to be used instead of petroleum-based products. Only return the topic.
Reform of the Renewable Fuel Standard by the American Petroleum Institute's Downstream Group Director