cbs' kristina ruffini is at the courthouse. >> reporter: members of the public and press lined up before dawn outside the courthouse. hamper metcalf was one of a handful of pro-abortion rights demonstrators. >> millions of women have lost access to abortion care, especially here in texas. so the access to medication abortion is one of the last options that we have. >> reporter: federal judge matthew kaczmarek, a trump appointee, heard from an anti-abortion rights organization that argued the fda improperly approved mifepristone, posing risk to patients. the judge appeared sympathetic in his questioning, asking the group's lawyers if there is precedent for a court to withdraw fda approval of a drug. the fda argued the drug is safe and effective, approved up to the tenth week of pregnancy, and has been on the market for more than 20 years. the drug is available by mail, even in states where abortion is illegal. >> in some ways this could be a bigger deal than the reversal of roe v. wade was because it could have ripple effects in every state, not just states that want to ban abortion. >> r