I need to know how much USCIS takes to send the RFE hard copy to attorney. Do we get the reason for RFE thru email as well.

This depends on when the response to the RFE was submitted. USCIS will usually complete processing within 15 days after the RFE response is submitted.

How long will it take to become current?

The time frame for approval of a petition is much shorter than the time frame for a visa to become available.

You would not need to travel or seek admission n a B-1 visa if you also have an L-2.

Can H-4 status holder take PADI Scuba Instructor Course in the USA?

As long as you are not engaged in employment, that activity would not be prohibited.

Is there any legal issue with working remotely for a Canadian employer while operating the E2 business in the USA?

This is possible, but you must make sure that you will be in compliance with the terms of your E-2 visa status while in the US.

Rentering US on an H1B without an active Employer

The answer is "possibly." Under current, you would not be counted against the H-1B Cap in any given year if you were counted within the previous 6...

Does 2 year home country rule apply to me ?

What does the form DS 2019 indicate?

Birth certificate issues: Green card application

Your family should get the updated birth certificate with the adoptive parents' names on it.

F2 and H1B

You are an F-2 applicant at this point. If the Consul asks, you must be truthful about any pending H-1B petition for your spouse,.

You should include complete and truthful answers to all questions on form N-400.