NEW YORK — Emboldened by the new conservative majority on the Supreme Court, antiabortion lawmakers and activists in numerous states are pushing near-total bans on the procedure in a frontal attack on Roe v. Wade.
Mississippi and Kentucky have passed laws that would ban most abortions after a fetal heartbeat is detected, which means as early as six weeks, when many women don’t even know they’re pregnant. Georgia could join them if Republican Governor Brian Kemp signs a measure that has been sent to him.
And a bill in Ohio won final approval Wednesday in the Republican-controlled legislature; it now heads to Governor Mike DeWine, a Republican who said he will sign it. The final votes followed a spirited committee hearing where abortion rights activists evoked an era of back alleys and coat-hanger abortions.
Similar bills have been filed in at least seven other states with antiabortion GOP majorities in their legislatures.
Alabama may go further, with legislation introduced last week to criminalize abortion at any stage unless the mother’s health is in jeopardy.
The chief sponsor of the Alabama bill, Representative Terri Collins, acknowledged that the measure — like the heartbeat bills — is intended as a direct challenge to Roe v. Wade, the 1973 Supreme Court ruling that legalized abortion nationwide.
‘‘To me this is an issue the court simply got wrong years ago,’’ said Collins, who hopes President Trump’s appointments of Neil Gorsuch and Brett Kavanaugh to the Supreme Court lead to a reconsideration of Roe v. Wade.
Staci Fox, Atlanta-based CEO of Planned Parenthood Southeast, said these bans are ‘‘blatantly unconstitutional and lawmakers know it — they just don’t care.’’ The goal, she said, is to ‘‘challenge access to safe, legal abortion nationally.’’
Activists and legal experts on both sides of the debate agree that getting a Supreme Court decision on such a defining case is unlikely any time soon.
The bans may face difficulties just reaching the high court, given that Roe v. Wade established a clear right to an abortion during the first three months of pregnancy. Kentucky’s heartbeat law has been blocked for now by a federal judge; abortion-rights lawyers are seeking a similar injunction in Mississippi before the law there takes effect July 1.
‘‘The lower courts are going to find these laws unconstitutional because the Supreme Court requires that outcome,’’ said Hillary Schneller, an attorney with the Center for Reproductive Rights.
However, some federal appeals courts around the country, such as the Fifth Circuit, which covers Mississippi, Louisiana and Texas, are viewed as having become more conservative with the addition of Trump appointees.
If even one circuit breaks with Roe v. Wade and upholds a heartbeat ban, that could be enough for the Supreme Court to take up the issue, said Justin Dyer, a political science professor at the University of Missouri.
If the Supreme Court ever did overturn Roe v. Wade, states would presumably be left to decide for themselves whether abortion would be legal.