US Immigration from Laos

My wife has had her combo card since May of last year 2020. Our interview has been ready to schedule since May.

Due to this pandemic, we have not traveled outside of the states while waiting for I-485 interview.

I believe the card is only valid for one year. Has anyone renewed theirs and do you have to pay the fees again?

Hi I'm petition for both my parent to the usa. do I have to file two separate 1-864 one for each of my parent? What confuse me is in part 2 of the i-864 you have the principle immigrant and the part 3 you have family members? Also i do not work but my husband make enough to sponsor both of them, so how would i do a joint sponsor, do i have to file one and just check Part1 1.a box and then he file one and check Part 1 1.d box for each of them? thanks in advance

Hello VJ my son will be coming to the USA with his mother, he has a crba and a passport so I did not have to petition for him but my concern is will they questions him about any vaccine shot he need to take to be able to enter the USA if anyone has any experience or advice please feel free to comment below thanks in advance.