The main purpose of this legislation, known as the Maternal and Infant Syphilis Prevention Act, is to address the rising cases of congenital syphilis in the United States. The law aims to improve screening and treatment practices for syphilis among pregnant women and newborns, particularly through Medicaid and the Children's Health Insurance Program (CHIP). Key provisions of the law require the Secretary of Health and Human Services to create and distribute guidance on best practices for screening and treating congenital syphilis.