1. Short title This Act may be cited as the Untraceable Firearms Act of 2020 . 2. Sense of Congress It is the sense of Congress that— (1) without the enactment of this Act, the Bureau of Alcohol, Tobacco, Firearms and Explosives has the authority to regulate ghost guns (as defined in section 921(a) of title 18, United States Code, as amended by section 3 of this Act) and unfinished frames and receivers; and (2) the purpose of this Act is to clarify and strengthen such authority. 3. Requirement that all firearms be traceable (a) Definitions Section 921(a) of title 18, United States Code, is amended— (1) in paragraph (3), by striking or (D) any destructive device and inserting ; (D) any destructive device; or (E) any combination of parts designed or intended for use in converting any device into a firearm and from which a firearm may be readily assembled ; (2) in paragraph (10), by adding at the end the following: The term manufacturing firearms shall include assembling a functional firearm from a frame or receiver or molding, machining, or 3D printing a frame or receiver, and shall not include making or fitting special barrels, stocks, or trigger mechanisms to firearms. ; (3) by inserting after paragraph (29) the following: (30) The term frame or receiver — (A) means the part of a firearm that provides or is intended to provide the housing for the trigger group, regardless of the stage of manufacture; (B) includes a frame or lower receiver, including blank, casting, or machined body, that requires modification, including machining, drilling, filing or molding, to be used as part of a functional firearm, and which is designed and intended to be used in the assembly of a functional firearm; and (C) does not include a piece of material that has had— (i) its size or external shape altered solely to facilitate transportation or storage; or (ii) solely its chemical composition altered.