The National Women’s Law Center’s “friend of the court” brief is on behalf of 22 organizations in Susan Seven-Sky v. Eric H. Holder, Jr., a case before the U.S. Court of Appeals for the District of Columbia, which is considering an appeal to a U.S. District Court for the District of Columbia decision that a key provision of the Patient Protection and Affordable Care Act (ACA) is unconstitutional. The brief explains what’s at stake for women in the challenge to the new health care law and why the ACA, in correcting fundamental gender inequities in the health insurance and health care markets, is an appropriate exercise of federal Commerce Clause authority and therefore is constitutional.