Constitutional amendment to define person

HB 316 is a constitutional amendment bill that would redefine "person" in Montana's constitution to include all humans from fertilization or conception onward, regardless of developmental stage. It would specifically state that unintentional harm to an unborn child by a mother cannot form the basis for a legal claim. If passed, the amendment would require the legislature to create implementing laws and would be submitted to Montana voters in the November 2026 general election. The bill died in committee during the 2025 legislative session and has not advanced to a vote.