The Affordable Care Act has transformed healthcare in the U.S. by ensuring access to no-cost preventive care services, such as cancer screenings, immunizations and contraceptives, for millions of Americans. The preventive-care mandate must be upheld because it promotes public health, reduces healthcare costs and aligns with fundamental principles of equity and access to care. By mandating that these services be offered at no cost, the Affordable Care Act has removed financial barriers that often deter individuals from seeking necessary care.