I can't petition my children to US because of their mother went missing for 25 years. Is there any chance?

There are ways of getting legal divorce with a person who is missing. Your second marriage is not legal, if you were still married to someone else....

When am I eligible to apply for citizenship?

90 days prior to the fifth anniversary of your permanent resident status.

What chances do I have to renew F1 visa, if I was expelled from college for possessing alcohol, marijuana and keeping a knife.

Slim to none. Speak with your school and with an attorney.

Can a green card holder petition her daughter while in her native country ?

You should start with filing I 130 for your daughter. No matte where you are at. When the priority becomes current, you will file I 485 for her ,...

You may travel if you have advance parole and your nationality permits you to travel there or you get a visa. However, if you stayed in the US...

Plane tickets: as in passport. Have your marriage certificate with you.

I-751 We were moving a lot during the last two years. Should my husband and I send a memo to explain why we moved? We have all t

Yes, you may send a letter explaining the moving.

Marriage with US Green card holder

Unless the green card holder becomes a citizen at the time you file for your documents, you will not be able to adjust your status.

I-751. I got arrested and I have ACD. I wasn't convicted of anything. I have certificate of disposition that I will be attaching

ACD has no connection to the interview. An officer may call for an interview anybody he/she wants.

'Visa fraud' if applying for I-485 while i-130 is pending?

Visa fraud is when you enter the country with intention to get married but use B1 visa. 60 days rule is a mere "help" or indicator to see how soon...