The purpose of this legislation, known as the "Mamas First Act," is to improve maternal health care in the United States by expanding Medicaid coverage to include services provided by doulas, midwives, and lactation support providers. The act aims to address the high rates of maternal mortality, particularly among women of color, and to promote healthier outcomes for mothers and babies. Key provisions of the act include the amendment of the Social Security Act to ensure that Medicaid covers a range of services from doulas, midwives, and lactation support providers.