H1B extension term when changing employer with an approved I140

An attorney who will be handling the transfer should be able to advise you on your prospects of staying in the US. However, changing employers may...

Regarding F2 Visa Extension

You can look up instructions to I-539 form at uscis.gov.

I don't know if i'm eligible or not

Have you filed I 485 as well? I would not recommend travelling abroad anyway, but if you have to, you have to use I 131 advance parole (if eligible).

Can I travel on 485 pending but approved EAD

You should speak with your attorney about your travel plans and your other questions. You can find answers that would depend on the details of your...

HI Experts, My H1 extension premium processing was approved on Feb 24 2017, my wife i539 H4 is still pending Mar 1 2017.

It may take longer than a month to get that approval. Also, approval or denial would depend on your wife's overall edibility. If she travels...

Can immigration deny me from entering USA?

Your friends are probably correct. If you travel to the country of alleged persecution now, how can you explain that you did not want to return...

Family-Based F2b. What if the petitioner go back to home country and never come back to US again.

At some point, if your mom never returns, it will become apparent that she abandoned her status and the petition will be automatically cancelled.

I do not recommend that for various reasons.

What should be on the H4 petition withdrawal request

No format, a sworn statement confirming withdrawal should do.

You cannot work legally without an EAD in H4 status, not even for yourself.