Human-Animal Chimera Prohibition Act of 2025
- Sponsor
- Rep. Smith, Christopher H. [R-NJ-4]
- Committees
- Judiciary Committee (primary)
- Last action
- Mar 14, 2025
Bottom line
This bill establishes federal criminal and civil penalties for engaging in the creation, transfer, or transport of certain defined human-animal chimeras, aiming to set ethical boundaries on interspecies biological research.
What it actually does
This bill amends Title 18 of the United States Code to prohibit the creation, transfer, or transport of specific types of human-animal chimeras. It broadly defines "prohibited human-animal chimera" to include embryos with mixed human and nonhuman cells, embryos resulting from cross-species fertilization, and nonhuman life forms engineered with human gametes, human brains, or human facial features. Violations carry significant criminal and civil penalties.
Proponents argue
Proponents argue the bill is necessary to establish clear ethical boundaries in scientific research, preventing the blurring of lines between human and animal life. They contend that creating organisms with significant human characteristics, such as human brains or gametes, raises profound moral and societal concerns that require legislative action to safeguard human dignity and prevent potential abuses.
Opponents contend
Opponents might argue that such prohibitions could stifle critical scientific research, particularly in areas like regenerative medicine, organ transplantation, and understanding human diseases, where chimera research could offer significant breakthroughs. They may contend that the definitions are overly broad or could inadvertently criminalize beneficial research, and that existing ethical oversight mechanisms are sufficient.
The bill is relatively short and clearly written, making it accessible for a reader to understand its core prohibitions and definitions within a reasonable timeframe.
Section 1
Short Title
This section establishes the official short title of the Act as the "Human-Animal Chimera Prohibition Act of 2025." This is the common name by which the law would be known and cited if enacted, providing a concise reference for the legislation.
Supporters argue
Supporters argue that a clear and descriptive short title helps in public discourse and legislative tracking, immediately conveying the bill's central purpose.
Critics contend
No specific opposition is typically raised against the short title of a bill, as it is a procedural element.
Tradeoffs
None inherent in the short title itself.
Section 2, adding new 18 U.S.C. 1131(1)
Defining "Prohibited Human-Animal Chimera"
This section provides a comprehensive definition of what constitutes a "prohibited human-animal chimera." It includes various scenarios such as human embryos with nonhuman cells making species membership uncertain, embryos from cross-species fertilization, embryos with mixed human and nonhuman nuclei, organisms with mixed haploid chromosome sets, nonhuman life forms engineered to develop human gametes or human brains, or nonhuman life forms exhibiting human facial features or bodily morphologies.
Section 2, adding new 18 U.S.C. 1131(2)
Defining "Human Embryo"
This section defines a "human embryo" as an organism of the species Homo sapiens during the earliest stages of development, specifically from 1 cell up to 8 weeks. This definition is critical for determining the scope of the prohibitions related to human embryos and ensures consistent application of the law.
Section 2, adding new 18 U.S.C. 1132(a)
Prohibiting Creation, Transfer, and Transport of Chimeras
This section makes it unlawful to knowingly, in or affecting interstate commerce, create or attempt to create a prohibited human-animal chimera; transfer or attempt to transfer a human embryo into a nonhuman womb; transfer or attempt to transfer a nonhuman embryo into a human womb; or transport or receive for any purpose a prohibited human-animal chimera. This establishes the core criminal prohibitions of the bill, outlining the activities that are explicitly forbidden.
Section 2, adding new 18 U.S.C. 1132(b)
Criminal and Civil Penalties for Violations
This section outlines the penalties for violating the prohibitions. Criminal penalties include fines under Title 18, imprisonment for up to 10 years, or both. Additionally, a civil penalty is imposed for pecuniary gain derived from a violation, amounting to the greater of $1,000,000 or twice the gross gain. These penalties are designed to deter prohibited activities.
Section 2, adding new 18 U.S.C. 1132(c)
Clarification on Permitted Research
This rule of construction clarifies that the prohibitions do not apply to research involving the use of transgenic animal models containing human genes or the transplantation of human organs, tissues, or cells into recipient animals, provided such activities are not otherwise prohibited by subsection (a). This aims to distinguish permissible and beneficial research from the prohibited chimera creation.