The process begins with the application of the I-130 form, which is an immigrant visa petition. Then, form I-129 must be presented. The government will approve the I-129 form and send it to the National Visa Center. This entity will communicate with the spouses and after receiving the essential documents, they will send the file to the immigrant’s country of origin. The consulate gives an appointment to the foreign husband and after an appointment then the government gives him the K3 visa. This visa is valid for 2 years. During that time, the immigrant spouse may apply for residency within the United States.