Please ask any one can help me. I am 78 years old and have a green card. I want my son to come to america to visit me but my daughter has applied immirant visa for her brother last year and will wait about 15 years to come here. i can't go back China because i have a carsick problem. I miss my son and I want my son come here visit first,but i dont know how to apply visit visa. Could any one please help me for this? Thank you very much.