Two good reasons for conservatives to oppose the Federal Marriage Amendment:
Second, a constitutional amendment defining marriage would be a radical intrusion on the nation's founding commitment to federalism in an area traditionally reserved for state regulation, family law. There has been no showing that federalism has been unworkable in the area of family law.(Hat tip.)
Third, a constitutional amendment banning same-sex marriage would be an unprecedented form of amendment, cutting short an ongoing national debate over what privileges and benefits, if any, ought to be conferred on same-sex couples and preventing democratic processes from recognizing more individual rights.