Following is the draft for a visa invitation letter.
1)Please edit it especially the second paragraph, you could add more details to make it more touching.
2) Please check grammar, spelling and formatting.
MM DD, 2015
Dear Visa Officer,
I, XXX(passport #: XXX), is writing this letter to support of the F-2 visa application for my wife XXX (passport #: XXX). I am currently attending full-time at Devry University. Though life here is much more stressful than before, I am getting accustomed to it. However, my biggest emotional problem is being apart from my wife, XXX. Hence, I sincerely hope that my wife can join me in the United States and stay with me until I complete my studies here.
My wife and I have been in love with each other since we were students in XX University. During these almost seven years, she is the only sunshine in my life. I will never forget the sweet memories we collected: every day in college we studied together and ate together, the promise we made to each other when we graduated. The scene that she held my hands and told me everything will be fine when my Mom is in the hospital. After I made a proposal to her last year, we final got married. I hope we could be together no matter what happens. What we want now is very simple, staying together and making our lives much sweeter. Please give us a chance to realize it. I greatly appreciate your time to process her application. If you have any questions, please feel free to contact me.