No one ever brought it up before 2014. I blame us all. We loved him as tea party candidate and did not do our homework on him. I cannot find anything posted here about him being born in Canada before primary.
I think states have a process.
I don't think they do. Or Obama would have been stopped.
The California Secretary of State had blocked candidates on eligibility in the past history. But the duty wasn't codified in law and the one serving during the last election refused to look into Obama.
And even if they do, they don't know what Natural Born Citizen means. They can pick and choose from a variety of opinions. But most secretary of states would rather avoid the issue.