What I should, if I don't have Sponsors or co-sponsor?

You may have another co-sponsor fill out and sign a new I-864 as a joint co-sponsor with proof of income and copies of last tax returns....

You should apply and obtain a transit "C-1 Visa" for such purpose. It will allow you to merely transit from one flight to another and even up to 29...

Is it able to renew a passport

Contact your own consulate.

After B1 to L1A COS, what evidence needed for spouse and child for L2?

You must show proof of your new status, evidence that you are effectively maintaining such status, evidence of relationship (marriage / birth...

First time H1B petition in RFE; can I transfer H1B to another employer?

There are basically two different issues here. One is about your status and the other about H-1B availability. With respect to your status, It...

Can I change my labor certification through the company I currently have it with from EB-3 to EB-2?

I've done this infinite times. It's perfectly possible as long as it is in a different position from the EB-3 one. Your company has to define the...

Can a naturalized US citizenship move to another country?

YES.

I am currently on F1 CPT visa. My employer is a US based company and would apply for my H1 visa in April, 2013.

The time it would take for the H-1B to get approved varies but will not really matter as it will not allow you to begin employment before the start...

Is there a grace period before I could get married after entering the US under F1 immigrant visa category?

There is a difference between simply getting married and marrying s US citizen and filing a green card application after entry. Getting married by...

When to submit I-693

The medical examination results should be sent on sealed envelope with the initial filing.