Thank you very much, 8 Lao Shi
1.I have my US citizenship certificate on hand now.
2. I worry that it will take a long time for them to get green card. That is why I was going to get I-539 extention.
One more question for you, 8 Laoshi
Once I submit I-130 for my sisters, who are in China, that means that they can't come to visit USA anymore before they get their green card. Is it right?
Thank you for your time.
Linda