If Romney’s and Santorum’s fathers were naturalized before they were born, then they are considered NBC. However, if their father’s didn’t get their citizenship before the births, then they’re no more eligibible than Hussein. Mickey Mouse could campaign but that doesn’t mean he’d be vetted and named as the party candidate meeting all Constitutional reuirements.
Mickey Mouse was born in America. And I'm pretty sure father Walt was a citizen at the time. The Mouse's problem is we don't know who his mother was. Born in US, with only
one parent then a known citizen, would make Mickey as eligible as Obama, no more. Arguably Mickey has no Mom, but has two Dads — presaging modern Disney — with his second Dad being animator
Ub Iwerks, who also was a US citizen at the time. Whether
that suffices for NBC raises issues even beyond Obama's case!