A commonly asked question is whether single SIV applicants that get married after arriving to USA can add their spouse from Afghanistan to their SIV case. The US Embassy Kabul has attempted to answer this question and reminds everyone to avoid using Nikah khats with fake marriage dates to make marriage appear to have occured before the SIV applicant traveled to USA. If US embassy Kabul catches applicants committing such fraud, then their spouse will be permanently blacklisted from all US visas and not able to immigrate to United States.
Please be honest with the SIV program. There are other legal ways to bring your spouse after arriving to USA as single SIV applicant.
See US Embassy Kabul post below for official explanation: