To suspend temporarily the duty on certain cores used in remanufacture.

H.R. 3120 is a legislative proposal that would have temporarily eliminated import taxes, known as duties, on specific used vehicle parts—often called "cores"—that are brought into the United States to be rebuilt or refurbished. By lowering the cost for companies to import these worn components for remanufacturing, the bill aimed to support the domestic recycling industry and reduce production costs for high-quality replacement parts. For everyday citizens, this measure was intended to help maintain a steady supply of more affordable, remanufactured automotive and machinery components in the American market.