(AP) — Opponents who have chipped away at abortion with state-level restrictions are facing a dilemma in some of the places where they have been most successful.

Do they continue with that approach or seek more dramatic policies that risk court rulings that could undo previous gains?

For the last several decades, anti-abortion groups have focused on putting relatively small limits on the procedure in politically conservative states. Those efforts intensified after Republicans made major gains in the 2011 elections.

But as groups on both sides of the debate mark Wednesday’s anniversary of the 1973 Roe vs. Wade decision, anti-abortion leaders and lawmakers are under pressure to take bigger steps.

Jennifer Mason represents Personhood USA, a Colorado-based anti-abortion group. She says many of her peers are frustrated with the incremental approach.