Republican lawmakers in Ohio are planning on introducing a bill on Wednesday that would ban almost all abortions and criminalize the procedure.

The "Ohio Prenatal Equal Protection Act" would overturn the amendment to the Ohio constitution, voted on in 2023, that establishes "an individual right to one's own reproductive medical treatment, including but not limited to abortion" before viability.

Reproductive medical treatment includes contraception, fertility treatments and miscarriage care.

Abortions are currently allowed up to 20 weeks since fertilization, according to the Guttmacher Institute, a research group that studies sexual and reproductive rights.

"[It] is a very, very simple and beautiful piece of legislation in that all it does is identify all human beings as persons deserving equal protection of the law, both born humans and pre-born humans," anti-abortion advocate Austin Beigel, with End Abortion Ohio, told ABC News. "So, it identifies those personhood rights starting at the moment of fertilization, when the new distinct organism is formed, the new human life that being that person now has equal protection under the law."