There's nothing in that WND article that says a candidate has to "show proof of citizenship" to run. The article is about the general concept that a president must be a natural born citizen.
I'm looking for a citation to the specific law that says presidential candidates are required to show proof of their native-born citizenship, to even be eligible to run
You did see that McCain had the same allegation raised against him and he disclosed what was necessary to disprove the allegation?
Logic would dictate that if one has to be a native-born U.S. citizen, they can be asked to prove that prior to their election, and proof must be supplied on demand.
The article also says that even if Obama were born in the U.S., the fact that his father was not a U.S. citizen, combined with his mother not being in the U.S. for all of the 14 years before he was born, could also disqualify Obama.
