That legal marriage, then, has been possible for
opposite-sex couples, regardless of the sexual ori-
entation of either person, may indicate the prior-
ity of the form of marriage (requires one man and
one woman) over its substance (expectation of love
and commitment between two lifelong partners,
for example). Hence, the term “same-sex mar-
riage” rather than “gay marriage” is the better one
to refer to what’s at issue today. Discussions over
same-sex marriage have taken place in the nation’s
courts and legislatures, and have involved a vari-
ety of legal terms and concepts, but especially the
equal protection doctrine.
The idea of same-sex marriage received its fi rst
widespread introduction during the court pro-
ceedings surrounding Baehr v. Lewin (852 P.2d
44 [Haw. 1993]), a case within the state of Hawaii
that turned on that state’s equal rights provision
whereby denial of legal marriage to a woman who
wanted to marry her female partner was viewed
as impermissible gender discrimination, given
that, were she a man, she could legally marry her
female partner. This case was followed by Baker v.
Vermont (744 A.2d 864 [Vt. 1999]), which turned
on that state constitution’s robust equality provi-
sions in its “common benefi ts clause,” ultimately
forcing that state’s legislature to craft a regime
of civil unions parallel to marriage and offer-
ing equal state benefi ts. These and other actions
in the states prompted the Congress to pass the
Defense of Marriage Act (DOMA) in 1996, which
was itself followed by a host of similar acts enacted
by state legislatures, via popular referenda, or
through amendments to state constitutions. These
acts clarify that marriage is defi ned as between
one man and one woman for all legal purposes.
The primary instigators of vigorous defi nitions
of marriage to the exclusion of same-sex couples
have tended to be religious conservatives, whose
traditional views of marriage continue to resonate
with a lot of Americans, though not with people in
several other Western countries, or with relevant
professional organizations such as the American
Psychiatric Association, which supports same-sex
marriage on empirical grounds. The nature of the
arguments against same-sex union has been pre-
dominantly sectarian or pseudo-religious, such as
in natural law arguments that purport to prove
that same-sex marriage, like homosexuality itself,
is contrary to nature. The lack of verifi able empiri-
cal bases for the ban on same-sex marriage, and
the support of it through what empirical evidence
there is related to this issue, has led some com-
mentators to suggest that the deeper issue here
really is particular religious preferences ensconced
in American law and politics.
Proponents of same-sex marriage will point to
equality and the nature of marriage as a funda-
mental right or liberty interest established in a long
line of cases, including L
OVING V. VIRGINIA (388 U.S.
1 [1967]) and Zablocki v. Redhail (434 U.S. 374
[1978]), which together state that adults have a con-
stitutional right to marry. Nonetheless, detractors
point out that even today marriage is restricted to
two adult persons, and so will argue that specify-
ing a further restriction as to the different genders
of each person is but to clarify the historical under-
standing and commonplace defi nition of marriage.
Their opponents will counter that legal defi nitions
change over time and are subject to constitutional
fi lters, while historical understandings may refl ect
prejudice, rather than principle.
Hence, the issue has become a battlefield of
various constituencies, each attempting a knock-
down argument or legislative or legal maneuver
to cement popular understanding and to foreclose
any revisiting of the issue. Such moves are always
suspect in the liberal-democratic political regime
with a republican form of government operat-
ing under a written constitution. For example,
DOMA raised the issue of the full faith and credit
clause of the federal constitution, having taken
an issue not mentioned in the U.S. Constitution,
and so historically left to the states, and providing
a rationale not to accept other states’ laws when
they diverge from one another. Ballot initiatives
at the state level, and the still-anticipated move to
amend the federal Constitution, raise the specter
of majoritarianism directed against an unpopular
minority. The religious element in the debates trig-
gers First Amendment concerns even as a few
recognized religious denominations have revised
their understanding of marriage to include same-
sex couples. In addition, the equal citizenship
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