The I-129F petition is used to bring a fiancé(e) (K-1) to the U.S. for marriage. It also allows the children of the foreign national fiancé(e) to accompany or follow them through a K-2 visa. 

The application process requires gathering extensive documentation to prove the validity of the relationship and the eligibility of both parties. It is beneficial to demonstrate that the relationship is long-standing, genuine, and based on mutual affection, which can include evidence such as photographs, correspondence, and travel records.

To petition for your fiancé(e), you must be eligible as a U.S. citizen who can marry. You also cannot be a registered sex offender or have committed a violent crime in the past. 

Key Eligibility Requirements for the K1 Visa Include: 

• Intention to marry: Both partners must genuinely intend to marry within 90 days of the fiancé(e) entering the United States.
• Legal capability to marry: Both parties must be legally free to marry, meaning any previous marriages must be legally terminated through divorce, death, or annulment.
• Physical meeting: The U.S. citizen and their fiancé(e) must have met in person at least once within the two years preceding the filing of the I-129F petition unless meeting in person would violate strict, long-established customs of the fiancé(e)’s foreign culture or would result in extreme hardship to the U.S. citizen. Certain waivers are available for this requirement if it cannot legitimately be met.