My ex-husband & I have a 50/50 custody order of our 4 year old child. We are both not allowed to take our child out of the state of CA without the other's permission. My ex-husband has been on my back for two years about taking our child to Mexico, which I will not agree to. Recently, my child told me she went to Mexico on an airplane during her last visit with her Father. Since she is 4 years old I can't get any detailed information out of her. Is there anyway I can obtain a passenger list for an airline? Or can I found out if she has had a passport taken out? I can't seem to think of any other way to find out if she really did leave the country. Also, if she did indeed get taken to Mexico without my permission what steps can I take next?