Adjustment of status interview, question about documents?

You should bring copies and originals of all your co-sponsor documents. Regarding your co-sponsor, you should ask for a letter from the army...

Am I allow to work while my OPT Extn. Is pending for Approval before USCIS

You should listen to your employer. You are not allowed to work without authorization from USCIS.

I have visitor visa B-2 and it is still valid till September 2014, and i'm planning to take bahamas cruise from Miami in Aug2014

You will have the same I-94 and need to leave the US in September.

I am on conditional green card for a few moths now,have some marriage problems about financial issues,we don't live together

It would be best if you and your wife can reconcile and live together again.

After I send an application for green card for my spouse, can she transfer her h1b to another employer ?

She may be able to find a new employer in HI after you file the paperwork and apply for a work permit for her. It can be very difficult to prove a...

When my brother get usa visa ? F4 category,priority Date 11 february 2002 ,Country(INDIA)

It is not possible to foresee when visa numbers become available. But given that current PD is Dec 22, 2001 it may become current by early 2015.

How long should i wait for priority date or visa number?

It is approximately 2 years for you to wait before the Priority date becomes current..

Do I need to get visa stamping for my new approved petition when I have the stamping with the previous petition?

You can only work for Employer B after Employer B has filed a petition for you. If you enter with your current stamp you must be working for...

Change of citizenship for green card holder

You should be able to enter the US with your green card. The issue will be if you are remaining a permanent resident in the US. For example if you...

No company A cannot cancel you visa.