As I think I've mentioned here in the past, I've never really understood the ban on Americans who aren't "natural-born citizens" becoming President - either the reason for it (it seems an unnecessary smear on the loyalty of naturalised citizens, and on their hypothetical voters) or the technicalities of it.

As I've been told, the Founders were a bit concerned that some two-bit monarch would try to sneak their way into conquering the US government by becoming president and, IDK, staying there.

But they never bothered to define "natural born citizen", and it's not clear who counts