A Texas law that bans most abortions after six weeks of pregnancy went into effect Wednesday, as a midnight deadline for the Supreme Court to stop it came and went without action.

The court could still grant a request from abortion providers to halt the law, one of the nation’s most restrictive. But both the statute’s proponents and opponents had expected word from the high court before the statute went into effect Sept. 1

The law effectively eliminates the guarantee in Roe v. Wade and subsequent Supreme Court decisions that women have a right to end their pregnancies before viability, abortion providers said, and that states may not impose undue burdens on that decision.

The Texas law “unquestionably contravenes this Court’s precedent … with abortions after six weeks banned throughout Texas — something that has never been allowed to occur in any other state of the nation in the decades since Roe,” said a brief filed by abortion providers and their allies.