No state law may violate the original Constitution though. Which is why it was written to limit government, which includes state governments. No state, for example, can make a law that says you can't own a gun (although they're doing their damnedest anyway), because the original Constitution says the government may not take away that right. This isn't a contradiction of Jefferson's statement but a support of it.
The jurisdiction of the states is "Civil Rights, Laws, Police and administration of what concerns the State generally."
Somewhere along the way the Feds usurped States rights - probably the fall out of the Civil War.
Probably. The states have WAAAAY more power than the Fed. It's time they push it.
As to special rights for homosexuals, that's the states province and rights fail everytime it's voted on. The Feds need to be slapped spitless by the states.