回复：替一对老夫妇问关于儿子移民

现在要求老夫妇的税单，但他们这5年根本没交过税。
-Even if they have not paid the tax, they are still supposed to file the tax return, right? If so, just get teh copy of the tax tran from IRS. If they did not file any tax return, just explain it to the immigration officer and that will be OK.

老夫妇想和儿子团聚，请问这种情况怎么准备面试？
-Nothing special. Just prepare the required documents.

申请人一定要有一定的经济担保吗？
-Yes. Their daughter's 经济担保 is also fine for their son.