Public Law 104-199, the Defense of Marriage Act provides, in part:
SEC. 3. DEFINITION OF MARRIAGE.
(a) IN GENERAL.—Chapter 1 of title 1, United States Code,
is amended by adding at the end the following:
§ 7. Definition of ‘marriage’ and ‘spouse’
‘‘In determining the meaning of any Act of Congress, or of
any ruling, regulation, or interpretation of the various administrative
bureaus and agencies of the United States, the word ‘marriage’
means only a legal union between one man and one woman as
husband and wife, and the word ‘spouse’ refers only to a person
of the opposite sex who is a husband or a wife."
USCIS is not allowed to record your status as "married" on the Naturalization Certificate.
Here is article about current litigation in a Mass. case. It is being raised to the 1st Circuit Court of Appeals. You are in the 2nd if you live in CT.
http://www.washingtonpost.com/wp-dyn/content/article/2011/01/14/AR2011011406508.html