When a parent is given primary physical custody of his or her children, the majority of the day-to-day decisions most likely rest with that parent. Therefore, it can be disconcerting when that parent must obtain the consent of the other parent and/or the court to relocate the children from Texas to another state or country. This may not be something that either parent considered at the time of the divorce.
If the custodial parent does want to move out-of-state, the easiest course of action would be to work things out directly with the noncustodial parent. If an agreement can be reached without involving the court, that would save everyone the time and expense of going to court. However, it does not always work out that way, and the other parent has the right to object to the relocation.