Can my wife take the kids across state lines without my permission?
Question Details: Can my wife take my 4 and 1yr old across state lines to her parents house without my knowledge and plan on keeping them there?
If there is no court order otherwise in place then, yes, she can do this. However, if you file for divorce now or do so before she can establish residency in the new state, you can force her to move back to the jurisdiction.
Since these matters can get rather complicated, your really should consult with a divorce attorney on the matter. This is too important to not to be legally prepared.