The United States Constitution has already been interpreted to provide a variety of family-related protections which, if applied consistently, also protect same-sex couples and their children. Only by radically reformulating and severely undermining existing protections can courts and commentators justify the claim that the Federal Constitution does not offer a wealth of family protections, including the right to marry a same-sex partner.

Discussing the constitutional implications of civil unions with a special focus on how they might be treated in the interstate context, Strasser...