儿媳妇申请我儿子婚姻绿卡，半年前他们提交申请的时候，I-864提供了我儿子的收入，收入足够了，自己sponsor自己，当时儿媳妇还在上学，最近移民局来信要求提供Co-sponsor,现在儿媳妇已经工作三个月了，需要重新填写I-864还是怎样？
-The problem is that your daughter in law had no enough income for the tax return of 2019. So, she had better find a co-sponsor to provide a new I-864 as requested by USCIS.
他们有银行存款，需不需要提供呀？-If they have enough cash in the savings, they may provide it. The cash must be 5 times of the required amount. For example, if they need $10,000 to meet the I-864 requirement, then their deposit amount in the savings must be $50,000 or more.
非常感谢您！
