A judge in Texas is expected to issue a ruling as soon as today that could block access to the common abortion medication mifepristone nationwide. Plaintiffs in the case are challenging the Food and Drug Administration’s approval of mifepristone over two decades ago. The move would impact even states like New York and California, where abortion is still legal following the overturning of Roe v. Wade. Mifepristone is used in more than half of the abortions provided by clinics and physicians in the U.S. In January, the FDA announced retail and mail order pharmacies can now sell the abortion pill directly to patients with a prescription.