Can we travel to home country when our H1b is in process (currently in H4)?

Ideally you should return in H-1B in September if you will entry to join your employer.

Can I move from L1A to B2 to L1A Visa? ( The two roles being within the same parent company)

You are considering the scenario from your side. It may be a good idea to talk to your employer and check what they think about the going back and...

This is how it can play out - (1) you resign and the Company B petition is denied. You will have to leave the U.S. (2) you wait until a decision...

Can we take driving licence with the H1B approval receipt even though it is valid from OCTOBER only?

Your current status is F-1 and so you cannot seek driver's license based on a future job offer in H-1B. You may want to try showing them your I-20...

How soon can I apply for L2 visa restamping based on my I94?

Yes. You will apply for extension of their status or if they are abroad apply for L-2.

H4 to f1 visa RFE questions

It is highly recommended that you retain an attorney to respond to the RFE.

Is it advisable to apply for sibling gc when on H1b

GC through sibling and employer while one is on H-1B is not a problem.

How long has to be wait for get decision latter for green card marriage in California service center?

Depending on the category of petition, namely, spouse, child, sibling, etc and your status - whether you are USC or LPR, the processing time may...

You get paid in U.S. when you are not physically in U.S. and you pay taxes in U.S. when you don't necessarily earn in the U.S.?

Question on h1b withdrawal by employer

Your new employer should petition before you quit or are terminated.