right now the only problem with making polygamy legal is all the laws are written with the two person marriage in mind and as such do not address issues when the marriage contains more than two. Divorce, property and children issues are suddenly vastly more complicated and not covered under law. Thus such legal changes must be made prior to polygamy becoming legal.
Yeah, that's true. Agreed.
Please show me a state where the deciding factor of whether a couple can have sex/get married or not is based upon a risk factor. There is not one state in the union that places risk factor as the criteria, unless there has been a new law in he past year or so. To use such a risk factor would mean that a non-consanguineous couple could be denied marriage/sex based upon that risk factor.
Sure, for example, Kentucky's law is:
"530.020 Incest.
(1) A person is guilty of incest when he or she has sexual intercourse or deviate
sexual intercourse, as defined in KRS 510.010, with a person whom he or she
knows to be an ancestor, descendant, uncle, aunt, brother, or sister. The
relationships referred to herein include blood relationships of either the whole
or half blood without regard to legitimacy, relationship of parent and child by
adoption, relationship of stepparent and stepchild, and relationship of
stepgrandparent and stepgrandchild"
Louisiana:
"§78. Incest
A. Incest is the marriage to, or sexual intercourse with, any ascendant or descendant, brother or sister, uncle or niece, aunt or nephew, with knowledge of their relationship.
B. The relationship must be by consanguinity, but it is immaterial whether the parties to the act are related to one another by the whole or half blood."
Those are pretty good descriptions of the line where the risk of birth defect is noteworthy. Technically, they should add on first cousin twice over- meaning that they are a cousin on two sides- e.g., they are your father's niece and your mother's niece, that apparently carries a risk too, but isn't included in those statutes. Presumably the statutes came before that was identified.