IOWA CITY — Republicans who control a majority of the nation’s statehouses are considering a wide range of abortion legislation that could test the government’s legal ability to restrict a woman’s right to terminate pregnancy.

The Mississippi House passed a bill Friday that would make the state the only one to ban all abortions after 15 weeks of pregnancy. In Missouri, lawmakers heard testimony earlier in the week on a bill that would ban abortions after 20 weeks.

A diagnosis of Down syndrome is not a basis for legal abortion, Utah Sen. Curt Bramble says.

The Ohio House is expected to consider bills, already passed in the Senate, that would prohibit the most common type of procedure used to end pregnancies after 13 weeks and require that fetal remains be buried or cremated.

Abortion is a perennial hot button issue in statehouses across the country. Republican-controlled states have passed hundreds of bills since 2011 restricting access to the procedure while Democratic-led states have taken steps in the other direction.

The early weeks of this year’s state legislative sessions have seen a flurry of activity around the issue. It comes as activists on both sides say they expect the U.S. Supreme Court to soon consider a question that remains unclear: How far can states go in restricting abortion in the interest of preserving and promoting fetal life?

The state bills debated since the start of the year “are all tests designed to see how far government power to legislate on behalf of a fetus can reach,” said Jessica Mason Pieklo, who has been tracking legislation as the senior legal analyst for Rewire, a website that promotes views supporting abortion rights.

She said the outcome will determine whether states can ban abortion after a specific time period and outlaw specific medical procedures. Advocates for abortion rights say those strategies undermine the Supreme Court’s 1973 ruling that women have the right to terminate pregnancies until a fetus is viable.

In Utah, critics have warned that a pending bill to prevent doctors from performing abortions on the basis of a Down syndrome diagnosis is unconstitutional. But its co-sponsor, Republican state Sen. Curt Bramble, said he is willing to defend the bill in court because its goal is to protect unborn children.

“There are times if the Supreme Court got it wrong, it is appropriate to push back,” said Bramble, an accountant from Provo.

The abortion-restriction bills have drawn opposition from women who say they have made the excruciating choice to terminate a pregnancy, often after discovering serious fetal abnormalities.

“A 20-week abortion ban sounds OK, but if that gets passed, what’s next – 18 weeks, 15 weeks? At what point does it make abortion truly illegal?” said Robin Utz, 38, who submitted testimony this week against the Missouri bill.

Utz terminated her pregnancy in its 21st week in November 2016, after learning her daughter would be born with a fatal kidney disease if she survived birth.

Undeterred, the National Right to Life Committee has advocated for laws that ban abortion after 20 weeks of pregnancy and outlaw dilation and evacuation.

Related Stories