If the parents are married that depends on the circumstances. Either parent has equal parental rights. Either can take the child to vacation in another state or to visit friends or relatives. If one tries to move permanently with the child they may be successful if the other parent doesn't object in a timely manner. The other parent can file for an emergency injunction to prevent the move until a court hears their objections to the move and renders a custody order and visitation order.
You should consult with an attorney who specializes in custody issues.
Yes.
Do you have a notarized letter giving permission for your child to travel?
The father took the child without permission because he wanted to spend time with them or because he believed it was in the child's best interest.
Because its their child and the child is only in your care and nothing should take place without their permission!
No, a child cannot travel internationally without a passport.
No, a child cannot travel to Mexico without a passport.
Permission from the other parent. Yes if you are in leagule custody of the child at the time
Children over the age of 12 can travel on most airlines without their parents. But they need their parents permission and the airline has to be notified when the booking is made that it´s a child travelling alone.
Yes, you may need permission to travel with your child, especially if you are traveling internationally. It is recommended to carry a notarized letter of consent from the child's other parent or legal guardian to avoid any issues at border crossings.
With the other parents permission, yes.
Report them as a runaway. That way the police will look for them. You can also block credit cards if they have any or use them to trace them with if you don't know where they are going.
No, a child cannot travel from the US to Canada without a passport.