There are still so many grey areas when it comes to the laws surrounding assisted reproduction. At the same time, more couples are using procedures like in vitro fertilization to have their own families. Because of this, the courts are hearing more and more cases where there just aren't any hard and fast rules - or real precedent - to look at.
Take for example a Supreme Court case in Colorado. In this case, a couple went through in vitro fertilization years prior - using their own sperm and eggs -- and now have three children together. The husband and wife have since divorced, and the question at hand is what should happen to the frozen embryos. The husband does not want more children, while the wife still does.