B-2 visa: Does crossing into Mexico restart clock on 180-day limit?

It will be in the officer's discretion as to how long to admit you for if you have a very short trip outside of the U.S.

H1 to H4 transfer, any help with couple of I-539 questions.

Please refrain from double posting and consult the original question for responses.

If you are on H-1B status then you can try to get into F-1 status but the I-140 may be an issue since it shows immigrant intent.

Is there any way I can get my non-us immigration status without traveling outside of u.s, since I can't affort a plane ticket?

How old are your two U.S. citizen daughters?

What are my chances to get US visa if I have criminal record because of act which isn't illegal in the United States?

This probably won't adversely affect you but yes, you need to disclose it.

Is your mother still alive and can file another petition for her?

Can another company apply for my H1B as they are interested to hire me while my H1B extension is in progress with my employer?

Yes this can most likely be done but the company attorney will need to review the case properly.

B1/B2 visa multiple times denial ?

Do you have the Form I-20s from the Michigan school?

How my lawful wife may come to the US, while I filed my asylum application?

Your wife can apply for an visa that she may qualify for but if she wants to apply for an H-1B she should find an employer ASAP.

Please let me know what can be done at this stage, can I still apply for labor amendment?

Your employer's attorney may need to file for a nunc pro tunc approval - consult with him/her ASAP.