H1b visa transfer to new company based on I-140 approval copy then what is the status of H4 visa ?

Assuming you are eligible for an extension of your H1b, your wife also must file for an extension of her H4.

Can I use a SSN that's on a card which says "Valid to work only with DHS authorization" obtained in 2007 to file 2012 taxes?

That number is in fact your social security number and if you are filing taxes that is the number you must use.

I129 didn't received.

You could try writing to them, or emailing them. Otherwise, get a photocopy.

Question related to EAD expiry

If your extension of status is pending, you are not now authorized to work.

I have a consulate card and a mexican passport. are those doucuments enough to fly on united airlines

If you are undocumented and you go to an airport you should be concerned you will be detained and removed from the US.

You can take your unexpired I-20 and apply for an F1 in your country. Bring proof you filed a timely application for change of status, to show...

You cannot "use" your B1 visa as an extension of status if you were admitted as an F1. Rather, if you wish you could file for change of status to...

No, if he has a clean record, under the Morton Memo of 2011 he will not be placed in removal proceedings. You can do a request to DHS to place him...

You do not need an unexpired passport to file for adjustment of status.

Working with an H1b now. getting married to a US citizen. Can I get an EAD after marriage and change jobs? How long will it take

You can apply for an EAD if you have a pending adjustment application. You can use the EAD to work wherever you want, however it would end your...