And now there are four. In the space of a week, the number of states allowing same-sex marriage has doubled, with Iowa and then Vermont joining Massachusetts and Connecticut. In California, gay and lesbian couples were exchanging vows for five months before voters put a stop to the practice in November. Californians are still talking it over, though, and loudly. New York and New Jersey may be next to debate the question.

In other contexts, this sort of turmoil might amount to an invitation for the United States Supreme Court to step in. But there are all sorts of reasons the court is likely to keep its distance, and a central one is the endlessly debated 1973 decision that identified a constitutional right to abortion.

“The concern about creating another Roe v. Wade looms large,” said Nathaniel Persily, who teaches law and political science at Columbia. “At least five members of this court, if not more, would probably be reluctant to weigh in on this controversy, especially given the progress that is being made in state legislatures, state courts and public opinion.”

Court decisions on issues like school desegregation, abortion and same-sex marriage can raise questions about the judicial branch usurping the democratic process. But there are strategic issues as well. The Supreme Court not only decides cases but also decides which cases to decide. In jurisprudence as in life, timing is everything.

Even some strong supporters of abortion rights believe, for instance, that Roe went too far too fast and may have been counterproductive. One of them is Justice Ruth Bader Ginsburg.

 See Gay Marriage Issue Steering Clear of the Supreme Court

New York Times -