US Immigration from Vietnam

I'd greatly appreciate your answers to my questions below:

1. Both my wife and I have dual citizenship USA - Vietnam. We both have 2 passports that are current and valid. My assumption is we both do NOT need to purchase any VISA to enter either country in and out, am I correct? I have never traveled with 2 passports before so I just want to make sure I do this correctly.

2. I have 2 kids that are both US Citizen as they were born in the US. I recently applied at Vietnam Embassy in the US to register them into Vietnamese Birth registry and was approved as both parents are Vietnamese nationality. However, I have NOT applied Vietnamese passports for my kids. They only have US passports. Does this mean I must apply for VISA for them in order to enter Vietnam?

Thank you for your time!

Can anyone recommend banks or mobile phone providers that won t require a social and take foreign passports? It s going to be awhile before the EAD/resident card comes and most so far have required ID we don t have.

I filed a change of address by printing and filling out a I-865 form and mailing it by certified mail a month ago.

I followed these instructions: https://www.uscis.gov/i-865 - and sent it to the correct service center.

Today I get mail from USCIS and it turns out they sent it back with a boilerplate letter basically saying "the information you seek is available online blah blah" and that "the Vermont service center will continue to accept paper correspondence for [a limited set of forms of which I-865 is not included]"

But there's no way to file the i-865 online. The instructions specifically say to print it and mail it to the service center corresponding to your location.

On the other hand, it shows the right address on the letterhead, and there was no forwarding label on the envelope. So it seems they know my new address.

What gives? USCIS can be so irritating.

Anyone know if only the interviewee is able to attend, or if the spouse can also attend the interview? Anyone who has done an interview recently?

It's been over 2 years since our initial interview was cancelled, but now we finally have a new interview date. In preparation, I will be getting the following documents ready.

1. I-134

2. IRS transcript (last 2 years)

3. Proof of employment

4. Recent paystubs

5. Letter of intent

6. Divorce decree (since I'm divorced)

Am I missing anything? Thank you in advance.