The outcome of the case is extremely uncertain and almost no one dares to predict what the conservative-dominated high court might decide. In combination with another drug, it is used for more than half of abortions in the United States.

Canada's Family Minister, Karina Gould, reiterated her country's intention to help American women if needed. A coalition of anti-abortion doctors on Tuesday urged the high court to leave the appeals court's decision in place. The first suspension decided by the Supreme Court was valid until Wednesday.