In a related topic - My brother (a JW) and his wife (a non-JW) were trying to adopt. They were turned down a number of times because the case worker determined that (a) having a mixed-belief marriage with a high-control religion creates a harmful environment and (b) the dangers of the JW doctrines (e.g. Blood Issue, Shunning) would be a potential harm to the child.
It's always nice to hear when the system actually works as it should.