Now Do I have the option to choose between Employer A and Employer B (both on H1)? If yes, what are the docs needed

Employer A may file an H1B on your behalf. You and your employer should consult an immigration attorney.

When will my family get interviewd?

We expect typical NVC processing to be about 2 months and 2-3 months before the consulate follows up.

Is it possible that when you apply for B2 Visa Extension and reply does not come before 1-94 expires, you have to go?

A B2 visa extension is timely filed when filed before the I-94 expires. A timely filed visa extension permits the applicant to remain in the US...

Can I get a visa to be here while my U.S. born children get treatment for cancer?

If you qualify for DACA you would not be deported.

1) Can some other Company(C) use (or transfer) this H1B/Petition to employ me in USA? 2) Will I be CAP exempted?

You preserved the H1B cap approval by obtaining your H1B visa. Although, you did not use the H1B visa you remain cap exempt. Mr. Smith is an...

H4 may attend school. You need not change status to attend at this time. An H1B petition filed on your belhalf will not be adjudicated by May...

Can I apply for H1B visa with my old receipt number ?

Although, your prior petition was selected in the lottery once denied it is not available. You are subject to the cap.

When do I receive a notice after citizenship interview and after mailing more documents ?

Optimistically, you will receive an oath ceremony letter in about 3 weeks.

1. Is my H1B visa still valid(I mean cap exempt) or company A revokes it and it is invalid ?

Although, your prior H1B may be revoked you are not subject to the cap. A new employer may file an H1B petition change of status petition not...

EB2 from employer and I-485(under EB1) independently can it be filed at same time?

If your wife's EB1 I-140 is approved you should have no problem with your adjustment to permanent residence. You are not obligated to inform your...