I suppose I mean, for example, recent decisions by Supreme Court judges imposing laws on the states, and ruling out Proposition 8.
The Court did not impose any laws on anyone. Elected representatives do that. In the case of Prop 8, the Court ruled that the people who were defending the case had no standing to do so. It was a decision on the Constitutionality of the trial process. Think about the ramifications, if anyone who felt like it could go to court, or jump into a lawsuit when they felt like it. You must have standing to be in court.
The governor and the attorney general of California decided not to defend the proposition. If you want to find blame somewhere, that is the place to do so. On the other hand, a good argument could be made (and was made) that Prop 8 was unconstitutional. So, it is quite possible that the governor was simply making a prudent decision not to waste money in the state coffers to defend an obvious losing case.
With DOMA, the President followed the Attorney General’s recommendation that the section of DOMA which was struck could not be defended, on constitutional grounds. The House of Representatives decided to defend the matter, regardless of that correct assessment. As it turned out, that part of DOMA was struck on equal protection and on due process grounds.
The logic was simple, and the ruling was clear. The only surprising thing about it was that only 5 justices formed the majority. But then, this may be the worst court in the history of our country.
If you agree that states have the right to define marriage. Then you can’t have two legally married couples in a state having differing rights under the law. It is really that simple. You either allow gay marriage, or you don’t. At no time has the claim been made that the marriage in question was not legally valid.