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(CNN) - Texas on Wednesday became the latest state in which a federal judge struck down a ban on same-sex marriage, setting the stage for gay and lesbian couples to wed in one of the nation's most conservative states.
This was supposed to be a states rights issue, but "the dominoes are falling quickly," said CNN legal analyst Paul Callan.
"We saw the beginning of this in California. We saw it in another federal circuit court in New York. And the holding was this: The 14th amendment of the United States constitution, which overrides all local constitutions, says if you are going to single out certain people and treat them differently, you better have a really good reason for doing that," said Callan.
Today's ruling, by San Antonio-based Judge Orlando Garcia, will not take affect immediately: It stays enforcement of his decision pending appeal, meaning same-sex couples in Texas for the time being cannot get married.
"This is a conservative court normally, a conservative jurisdiction, so this is a very, very important decision," said Callan.
For more analysis from Paul Callan, check out the video above.