It's the first major abortion rights case since Roe was overruled.
A high-stakes hearing played out before the U.S. Supreme Court on Tuesday in a case that could reshape abortion access nationwide.
The justices considered a challenge to the Food and Drug Administration’s regulation of mifepristone, the first pill taken in a two-drug regimen for a medication abortion, which is the most common method of abortion in the country.
It is the first major reproductive rights case before the high court since Roe v. Wade was overturned in 2022. A decision is expected by the end of June.
Jessica Ellsworth, who is representing the manufacturer of Mifeprex (the brand name of mifepristone), similarly criticized the plaintiff's claim of injury and their interpretation of the law.
She said the respondent's view is "so inflexible it would upend not only Mifeprex but virtually every drug approval and [risk and mitigation] modification the FDA has made for decades."
With Jessica Ellsworth, representing mifepristone manufacturer Danco Labs, now speaking, Justice Clarence Thomas pressed her on the the 19th-century Comstock Act and why that legislation doesn't bar the use-by-mail of the abortion pill.
Ellsworth responded that Comstock has long not been enforced and that she believes this legal challenge is not an opportunity for the justices to "opine" on Comstock's reach.
The federal government previously said in Tuesday's hearing that they do not believe Comstock's requirements are within the FDA's purview as it regulates drugs.
Ellsworth seemed to echo that during her own presentation and questioning, warning that the justices "should think hard about the mischief" that could be created by requiring FDA regulatory approval to be restricted by provisions beyond safety.
-ABC News' Adam Carlson
Three women are participating in Tuesday's arguments.
Elizabeth Prelogar, the solicitor general at the Department of Justice, is arguing on behalf of the federal government.
Jessica Ellsworth is representing Danco Labs, the manufacturer of mifepristone.
Erin M. Hawley is counsel speaking for the Alliance for Hippocratic Medicine, a group of anti-abortion medical organizations that brought the challenge against the FDA and mifepristone.
Justice Elena Kagan pressed Solicitor General Elizabeth Prelogar on the "arresting" statement from the government that this case marks the first time any court has restricted access to an FDA-approved drug.
"That is still to our knowledge the only time a court has done that," Prelogar responded.
"We have seen a disturbing trend of courts sometimes also overriding FDA's judgment to try to grant greater access to drugs and that overrides FDA expert judgment about what's necessary to ensure safe use," she continued. "And no matter which direction you come at it from we, on behalf of FDA, think that courts have no business making those judgments."
