Interference with child custody is a crime in Texas
Under Texas Penal Code §25.03, it’s a state jail felony to knowingly take or keep a child in violation of a custody order, or to take a child out of the court’s jurisdiction during a pending custody case with intent to defeat the court’s authority. A non-custodial parent who knowingly persuades a child to leave the custodial parent’s care can also be charged.
A related provision, §25.031, makes it a felony to agree, for payment, to abduct a child from a parent’s lawful custody by force, threat, deception, or unlawful entry.
If you believe the other parent has taken or is planning to take your child in violation of a custody order, bring a copy of the order when you contact law enforcement or your attorney — a documented, specific order (not vague language like “reasonable visitation”) is much easier to enforce.