I asked to fly to F4, an American immigrant visa forum, and sign 25 questions.

Then go to the "fly to America" forum and ask for it.

There is nothing certain about the interview with the US Immigration Service!

You should know more about your applicant.

Including when and what visa he arrived in the United States.

How did you get the green card and when did you become a citizen?

His work and life, his relationship with you. . . . .

Prepare yourself and don't tie you down with rules and regulations.