welcome Amanda, and thank you for posting. There is a real sense of urgency in your post - certainly understandable on behalf of his children - but may I also assume that you think he is a douche bag who has left his wife? If that is what you think then perhaps you can share more that will allow others to make suggestions and offer new avenues for search? How was he with the pending divorce? Did he want it or no? If not, why not? Without getting too personal, can you say why you were divorcing? Is this a money issue, a court issue, a lover issue, are drugs involved? Are you implying that the police, while being helpful, have also simply told you that it is not against the law to go missing? Whether you are feeling sad or angry, here's hoping you get some answers soon, and that others will weigh in with some insight or ideas.
