HB 316 proposes a constitutional amendment for submission to Montana voters that would redefine the term “person” in Article II, section 17 of the Montana Constitution. Under the proposal, “person” would include all members of mankind at any stage of development, beginning at fertilization or conception, regardless of age, health, level of functioning, or dependency. The amendment also states that no cause of action may arise from harm caused to an unborn baby by an unintentional act of its mother, and it directs the Legislature to implement the section through appropriate legislation.
If approved by the electorate, the measure would change the constitutional due process provision and could affect how state law treats unborn children in a range of legal contexts, including civil rights, liability, and any statutes or court interpretations that rely on the constitutional definition of “person.” Because it is a constitutional amendment, it would not take effect unless approved by voters at the 2026 general election, and it would require implementing legislation to give the new language practical effect.
Impact
HB 316 would amend the Montana Constitution rather than ordinary statute, altering Article II, section 17 to expand the constitutional definition of “person” to include unborn human life from fertilization or conception. That change could influence state constitutional interpretation and potentially affect civil liability, due process claims, and other laws that turn on personhood. The bill also includes a limitation on causes of action involving unintentional maternal conduct, which could narrow certain legal claims related to pregnancy.
Sentiment
The bill appears to have had meaningful support in both chambers, passing several floor votes and advancing through committee, but it ultimately failed in the Senate on third reading and died in process. The vote pattern suggests a closely divided and highly partisan or ideological issue, with substantial support from proponents and significant opposition from those concerned about the constitutional and legal implications of redefining personhood.
Contention
The main point of contention is the bill’s personhood definition, especially the inclusion of unborn children from fertilization or conception in the constitutional term “person.” Supporters likely view the measure as protecting unborn life and clarifying constitutional rights, while opponents likely object to the breadth of the definition and its possible effects on reproductive rights, medical decision-making, and civil liability. The provision barring causes of action for unintentional harm caused by a mother also appears likely to have been a sensitive issue because of its interaction with pregnancy-related conduct and legal accountability.