The law is never meaningless, unless you're a Democrat.
A state can’t force the electors in a FEDERAL election to do anything. I’m mean that’s the argument I’ve heard, and I do know that some 156 electors HAVE been faithless in the Electoral College vote.
http://www.fairvote.org/e_college/faithless.htm
According to Wikipedia “To date, faithless electors have never changed the otherwise expected outcome of the election. No faithless elector has ever been punished or charged with a crime.”
Yes, there is 1952’s Ray vs Blair. But just as Texas sodomy statutes got overturned after many precedents of US Law, why would not Ray vs Blair?
And since the "who is responsible for vetting" seems to have been left BY THE COURTS to the electors -- the electors have a DUTY to NOT vote Obama if they, individually, do not find him to be eligible. And that finding, by each one, is in my humble opinion -- not reviewable.