I'm filling out a paternity affidavit right now. The instructions say,
The parents of this child or anyone related to the parents cannot be witnesses to any of these affidavits.
This cannot be interpreted literally, as all human beings are distantly related to each other. Surely in order to claim paternity of my child I do not have to rustle up two extraterrestrials (or an extraterrestrial notary public). Even if it is taken to mean "provably related to," that seems problematic. Birth records go back a long way, and I've certainly met people and only later coincidentally learned that they were my fifth or sixth cousin; it would be unreasonable if I used a notary who happened to be my fifth cousin and that fact could later be used to invalidate my paternity.
How closely-related to me or my partner does someone have to be in order to be considered "related to" us for this sort of purpose? (I'm in the United States — Missouri, to be precise.)