 Other theories of parental rights focus on parents’ interests. Historically, parenthood has often been regarded as a possessory (or proprietary) relationship. Some genetic accounts of parenthood imply the proprietarian view that parents own their children (see 4.1; Hall 1999; Narveson 2002). However, property rights seem inappropriate here for several reasons: children cannot be sold and they cannot be used however the parent wishes. While it might be responded that parental property rights are limited, prohibiting sale and certain uses, this does not address the more fundamental objection that persons cannot be property.