Here, we review case law as it applies to parental rights. Specifically, we examine two issues: (a) Who has been awarded the right to parent? and (b) What rights have been bestowed to parents? The review demonstrates how family law in the United States reflects and perpetuates society's ambivalence about family structure and, subsequently, parental rights and responsibilities. On the basis of this analysis, we recommend a broadened legal perspective that not only communicates society's expectation of responsible parenting but, in addition, gives legal recognition to diverse family forms in which members carry out these responsibilities. C hanging family demographics in the United States have created new contexts for those assuming responsibility for childrearing. Growing numbers of adoptive, stepparent, grandparent-led, heterosexual cohabiting, gay and lesbianheaded families, and families formed through new reproductive technologies call into question assumptions regarding who has the right and responsibility to parent children-a role that historically has been entrusted to biological mothers and fathers. Indeed, although the rights of biological parents to assume the parental role are quite clear in most judicial decisions and state and federal statutes, other family members do not have such clear standards by which to ''parent'' or maintain meaningful relationships with related children. Thus, changing family structures have fueled new legal debates over the rights and responsibilities of parents and other family members. Although these debates are the outgrowth of somewhat different social concerns, underlying all is the basic question of who is responsible for childrearing and what are their rights in assuming this responsibility.Our purpose here is to review case law as it applies to parental rights. We specifically address two questions: (a) Who has been awarded the right to parent? and (b) What rights have been bestowed to parents? The issues inherent in these questions are fundamental to contemporary family life. They play an important role in defining the basic question of what constitutes a family and also influence how families interact with the larger systems in which they live. Our review demonstrates how family law in the United States has reflected and perpetuated society's ambivalence about family structure and, subsequently, parental rights and responsibilities. On the basis of this analysis, we recommend a broadened legal perspective that communicates society's expectation of responsible parenting and also gives legal recognition to diverse family forms in which members carry out these responsibilities.