There has long been a debate raging within the anti-abortion movement between those who have mapped out a careful strategy to slowly chip away at Roe v. Wade through incremental restrictions on abortion and those who want to launch legal broadsides against abortion rights in the hopes that one will take Roe down once and for all.

The incrementalists will have their big day in court on March 2, when the Supreme Court hears arguments in Whole Woman’s Health v. Cole, a challenge to a set of laws in Texas that seeks to cut off access to legal abortion even as the procedure remains legal. Whole Woman’s Health is the culmination of a decades-long strategy by groups like Americans United for Life to choke off abortion access by creating unnecessary regulations on clinics. These groups are also hoping to get the Supreme Court to reconsider Roe in the form of laws banning abortion after 20 weeks of pregnancy, just before when the court has said that abortion bans are legal.

But those who want to find a silver bullet to end abortion rights completely just had a day in court too … and it didn’t go well for them.

The Supreme Court today declined to hear an appeal of a lower court ruling that struck down North Dakota’s “fetal heartbeat” law, which would have banned abortion at about six weeks of pregnancy, before many women even know that they are pregnant. The law was clearly unconstitutional — one prominent anti-choice lawyer has called such efforts “futile” — but North Dakota Gov. Jack Dalrymple said that it was an “attempt by a state legislature to discover the boundaries of Roe v. Wade.”

The boundaries of Roe v. Wade, it turns out, however much they may be weakened by incremental restrictions, still prevent banning almost all abortions.

Yet today’s rejection is unlikely to halt the efforts of “heartbeat bill” crusaders, the most prominent of whom is Religious Right activist Janet Porter, who is currently running for the legislature in her home state of Ohio in an effort to push such a bill through.