 Conservatives also charge that the liberal approach cannot rule out incestuous marriage. While this topic has sparked less debate than polygamy, one defender of the civil-unions-for-all proposal has pointed out that civil union status, as justified on politically liberal grounds, would not connote sexual or romantic involvement. Thus, eligibility of adult family members for this status would not convey state endorsement of incest; whether the state should prohibit or discourage incest is an independent question (March 2010).