K-1 classification is designed for fiancés of US citizens who seek to enter the U.S. solely to enter into valid marriage with the petitioner within 90 days after arrival. K-1 applicant and US citizen must have met in person within 2 years of filing petition. K-1 may apply for a Green Card after marrying the petitioner. Fiancé’s children under 21 may accompany them under K-2 classification.
K-3 classification is designed for a person who has a valid marriage to US citizen, the US citizen has filed petition for Alien Relative, and K-3 beneficiary seeks to enter the U.S. to await approval. Spouse’s children under 21 may accompany them under K-4 classification. K-3/K-4 beneficiaries are admitted to the U.S. for 2 years but may extend their stay for 2-year intervals if petition for Alien Relative has not been approved yet.
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