Ok, a few issues. First, there are *9* black robes in Washington. Second, the U.S. Supreme Court is and always has been empowered to hear controversies arising from the U.S. Constitution. The 4th amendment concerns in this case would be of that nature.
With respect to gay marriage, the Court is hearing challenges to DOMA (a federal law), and cases that determine whether states are in violation of the U.S. Constitution with their particular implementations of gay marriage bans.
Federal courts do not generally hear (or have the power to hear) things that do not involve federal law or the U.S. Constitution. If it's a state law or constitution that has nothing to do with federal law, the state courts will be the only ones to hear your case. (There are exceptions, but that's the short version.)