Strengthening America's Families Act of 2021 This bill provides statutory authority for the Infant and Toddler Court Program and a related resource center. It also permits the Health Resources and Services Administration to expand the program through grants to states, tribal nations, and territories for establishing, stabilizing, or enhancing infant-toddler court teams. This program aims to improve the well-being of infants, toddlers, and families in the child welfare system through team-based case management services that foster coordination among courts, child welfare agencies, and other child-serving organizations. The resource center provides technical assistance, training, and other support for infant-toddler court teams.