For some couples, surrogacy is a miracle: an opportunity to have a child even if they’re unable to conceive one naturally. But it’s also big business. Not only is surrogacy expensive — think six figures — but it’s also largely unregulated. And that last part is becoming a bigger problem.  Just last week, a California couple was arrested on child abuse charges after it was revealed that they had over 20 children from different surrogate mothers living in a large mansion in Arcadia, a city near Los Angeles. Many of the surrogates are currently fighting for custody through the courts of...