You know, we keep saying 'polygamy', but as a legal term this is not polygamy. As I understand it, FDLS bowed to US law when they iniated having only ONE legal wife- a marriage registered with the state - and calling all of the others 'sister wives'.

A state does not regulate who is sleeping with whom or having children 'out of wedlock'. And distasteful- and expensive - as it is, going on public welfare as a single mother is not illegal.