Mr. McCain’s likely nomination as the Republican candidate for president and the happenstance of his birth in the Panama Canal Zone in 1936 are reviving a musty debate that has surfaced periodically since the founders first set quill to parchment and declared that only a “natural-born citizen” can hold the nation’s highest office.
The links are from an Althouse blog entry and from that blog entry's comment section, respectively.
It's not clear to me why making a baseless accusation of racism should be considered any less deplorable than actual racism.