Alito mentions the Comstock Act: What is it
Being cited in the arguments is the Comstock Act, a 151-year-old law under which it's illegal to use carriers such as the United States Postal Service to mail "obscene" materials such as drugs that induce abortions.
The Alliance for Hippocratic Medicine has said the FDA's decision to allow patients to receive mifepristone by mail instead of in person from certified health providers specifically violates the Comstock Act.
Solicitor General Elizabeth Prelogar, pressed by Justice Samuel Alito on why the FDA didn't consider the application of the Comstock provisions, said she did not think it fell under the FDA's "lane."
"And we don't think it means what respondents suggested," Prelogar said of the law.
Read more about the Comstock Act here.