1. Short title This Act may be cited as the Ghost Guns and Untraceable Firearms Act of 2023 . 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 (10), by adding at the end the following: The term manufacturing firearms shall include assembling a functional firearm 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. ; (2) by inserting after paragraph (30) the following: (31) (A) The term frame or receiver — (i) means a part of a weapon that provides or is intended to provide the housing or structure to hold or integrate 1 or more fire control components, without regard to whether pins or other attachments are required to connect those components to the housing or structure; and (ii) includes— (I) a forged, cast, printed, extruded, or machined body or similar article that is designed to, or may readily be completed, assembled, or otherwise converted to, provide the housing or structure, without regard to whether the housing or structure has been indexed, drilled, or machined in any way, and without regard to whether the article is sold, distributed, or marketed with or for any associated template, jig, mold, equipment, tool, instructions, or guide