This bill, known as the Securing America's Fuels Act, significantly modifies the clean fuel production credit within the Internal Revenue Code. It reinstates and enhances the special rate calculation for sustainable aviation fuel (SAF), increasing the credit from 20 cents to 35 cents per gallon or from $1.00 to $1.75 per gallon, depending on the production facility. The legislation also provides a specific definition for SAF, requiring it to meet certain ASTM International standards and explicitly excluding derivatives from palm fatty acid distillates or petroleum. Furthermore, the bill extends the clean fuel production credit for all eligible fuels by four years, moving its expiration date from December 31, 2029, to December 31, 2033. These provisions are designed to encourage greater investment and production of cleaner aviation fuels, with the amendments applying to fuel produced after December 31, 2025.