“Producing advanced biofuels in the United States promotes economic opportunities for communities across the country and increases market access for our nation’s farmers,” the Congressmembers write. “A strong RFS and availability of homegrown agricultural feedstocks are crucial to meeting the nation’s goal for new advanced biofuels for sustainable aviation (SAF), maritime, rail, home heating, and off-road heavy-duty markets.” Eighteen Senators sent a similar letter in June.