Yesterday PFAW Foundation joined the National Women’s Law Center, the law firm Hogan Lovells, and close to 70 other organizations in submitting an amicus brief in King v. Burwell, the pending Supreme Court case on tax subsidies for the Affordable Care Act (ACA). The brief notes that a decision in favor of those challenging the subsidies would threaten a central goal of the law: making access to health insurance possible for millions of people across the country.

The ramifications of a wrong decision in this case could be enormous, causing serious harm in the lives of people now relying on health insurance through the ACA. If the core tax subsidy provision were to be struck down, the brief points out, women of color would be especially hard-hit:

These tax credits are critical. Over 9 million women, who would otherwise go without affordable health insurance, are eligible to benefit from them, including a disproportionate number of women of color.

…The tax credits are not only critical to women’s health; they are critical to the ACA’s continued viability. Congress encouraged participation in the insurance market primarily through the careful interrelation of the individual responsibility provision, market reforms, and tax-credit provisions. Eliminate the tax credits, and the system unravels.

The amicus brief highlights the stories of many real women who depend on the tax credits to access needed health care:

Marilyn Schramm, 63, is a 26-year cancer survivor from Austin, Texas. She endured treatment for cervical cancer in her thirties and has experienced life-long complications from that treatment that have required surgeries since then. Marilyn retired several years ago. When her COBRA rights were exhausted, Marilyn was forced to go without insurance for six months because of her “preexisting conditions.” But in January 2014, Marilyn could finally purchase insurance on the federally-facilitated Exchange in Texas, with at least half of her premium covered by the ACA’s tax credits.

Marilyn has now been diagnosed with colon cancer; following surgery, she began chemotherapy this month. Her coverage depends on the ACA’s prohibition on excluding those with pre-existing conditions, and on its premium tax credits: With her modest retirement income, Marilyn is unsure whether or how she could pay her insurance premium without the tax credits.

As we have noted before, this case is a blatantly political attack intended to do serious damage to the Affordable Care Act. The millions of women and men across the country who rely on the ACA in order to access health care ranging from preventative screenings to cancer treatments deserve far better.