You would be able to open the account so long as Vanguard allows.

B1 to L1B COS and i 94 is expiring

You may remain in the United States while a properly filed change of status is pending. That being said your inquiries should really be directed to...

Citizenship for my children after father became usa citinzen

Your children could possibly be citizens. They may have derived citizenship through you. If they are citizens, you should request certificates of...

What steps should i take next time if i ever do apply again?

You need to establish you are genuinely coming to the United States to visit. You must establish both the purpose of your trip, duration of stay,...

What can i do

You will need to document your military service. You should also speak to an experienced immigration attorney.

When should I notify USCIS about my change in marital status.

Your sister should notify the National Visa Center when she is contacted about applying for the visa. She will need to submit written...

B1/2 tourist visa stay in the United States. When tourist can come again after 6 month stay in US?

There is no bright line rule. You need to be spending more of your time outside the United States. Entering within six months or less will likely...

Pending asylum

Probably. Your spouse had to disclose the fact you are here and applied for asylum. The government might want to compare your statements with those...

I agree. I think there must have been a misprint and it should have been the VSC.

Am I eligible for MAVNI program?

http://www.goarmy.com/benefits/additional-incentives/mavni.html is the official MAVNI information site. You can review specific eligibility...