1. 同时为在美国境内的父母申请绿卡，I130是不是父母各自一份？-Yes.
和I485各自一份？-Yes.
4份表格可以放在一个大信封里寄去吗？-Yes, but had better mail your father and mother cases, separately, in two packets.
2. 如果这次先只申请妈妈，以后申请爸爸时候还是填485吗？
-Yes.
还是有什么follow to join 的东西。-Irrelevant.
3. 如果爸爸无法在美国等485，回广州领事馆办的话。在拿到绿卡前能用还没过期的B1/B2签证进来美国吗？-May have trouble to enter US due to immigration intent. So, you may not need to file I-130 for him until he reenters US.
4. 是不是填了864担保后，他们就不能申请联邦的低收入医疗？
-Can not get medicare/medicaid.
几年后可以啊？-After they become US citizen.
申请加州或者洛杉矶县的低保呢？
-Ask the state/local government.
怕他们在美国生病啊。。。
