My Korean wife took our two children from the US to Korea without telling me — how does a Hague return application work in Korea, and how fast?

File the Hague return application now, this week, through the US Central Authority; it is transmitted to Korea's, and the case is heard in the Seoul Family Court, which has exclusive nationwide jurisdiction for return cases and is required to expedite them. The absence of a custody order does not hurt you — a married father in the US has rights of custody by operation of law, which is what the Convention protects. The "years" stories are usually cases that were filed late or fought through appeals; a promptly filed case with clear facts is measured in months. Do not fly to Korea to find them; fly when there is a hearing.

The legal frame

Korea implements the Hague Child Abduction Convention through the Act on the Implementation of the Hague Convention on Child Abduction (헤이그 국제아동탈취협약 이행에 관한 법률). The Convention's question is narrow: were the children habitually resident in the US immediately before removal, did the removal breach your rights of custody under US law, and were you exercising them? If yes, the Korean court must order their return unless one of the Convention's limited exceptions is proven by the taking parent. The Korean court does not decide who should have custody; that is for the US court after return.

Rights of custody, for a married parent with no order, are the rights US state law gives both parents jointly. A married father living with his children exercises them by living with them. Your wife had no right to change the children's country of residence unilaterally.

The process in Korea

Your application goes to the US State Department's Office of Children's Issues as US Central Authority, which transmits it to the Korean Central Authority — the Ministry of Justice. The Ministry may attempt to locate the children and to facilitate voluntary return; in parallel, or if that fails, a return petition is filed in the Seoul Family Court. The court holds hearings, may hear the children through a family investigator if their age allows, and rules. Appeals are possible and are also expedited. Enforcement of a return order is through the family court's own mechanisms, with the Ministry's assistance.

Korean counsel files and argues the petition; you may attend hearings and are usually advised to, for at least one. Video attendance is sometimes possible.

What she could argue

The exceptions are few and the burden is hers. Consent or acquiescence — that you agreed to the move or accepted it afterward; answered by your immediate objection in writing, which you should send today, once, through counsel or in a single clear message, and never contradict. Grave risk of harm on return — the most litigated exception, requiring serious evidence of danger to the children, not of an unhappy marriage; answered by the record of your family life and by the availability of protective measures in the US. Settlement in the new environment — only if the application is made more than a year after the removal; answered by filing now. The child's objection — for a six-year-old, rarely decisive. Allegations about you are the usual battleground; prepare for them by assembling, calmly, the evidence of the children's life in the US: school and daycare, pediatric records, your role, photographs, and anyone who can speak to it.

The children's passports

Her taking the originals is why she could leave; it is also evidence. Notify the State Department's passport office of the situation to prevent renewals and to place an alert; Korean passports for the children, if she seeks them, require the consent of a person with parental authority, and a notification through Korean counsel to the passport authority is worth making.

Should you fly now

No. Arriving in Korea without a court order, locating the children and attempting to take them back would convert you from the left-behind parent into the taking parent, would hand her the grave-risk argument, and could expose you to Korean criminal law. Your strength is that you are the parent who used the process. Fly for the hearing.

Practical insight

Hague cases are won by speed and by tone. Speed, because the one-year mark changes the law and because every month of Korean daycare is a month the other side calls settlement. Tone, because the taking parent's case is almost always built on the left-behind parent's anger — threatening messages, an appearance at her family's door, a social media campaign. Send one written objection, then let counsel speak. Fathers who did that have had their children returned; fathers who flew to Seoul and shouted at a grandmother's apartment door have spent two years explaining why.

We handle the Korean side in coordination with US counsel and the Central Authorities, and we can begin before your application reaches Seoul — text consultation or +82-2-522-3959.

— MEGA X Law Firm Korea, International Family Law Team