Not gonna happen. He doesn't have a source or he would surely have shown it by now, if only to shut us up. :-)
And I'm going to bed, where I'm sure I'll be dreaming of "sources". I'll check in the morning and see if he or anyone else actually came up with one.
“He doesn’t have a source or he would surely have shown it by now, if only to shut us up. :-)”
No source would shut you up. He is not a NBC if his dad was not a citizen. Period.