221g refusal of dependent L2 visa

The answer to both questions is 'no.' I mean, i guess the first one is 'yes, you can apply,' however it is almost certain to be denied. Your...

Hard to say. Several weeks to a few months probably. However unforeseen issues can arise that complicate things which could delay the process.

J1 to B2 status change, which is the deadline for I-539 submission? before 12 month or 12 month plus 30 days?

you still get to take advantage of the grace period.

Why do DHS send letter to appear for removal when I have already call the court and my court date is still valid?Canthey detain?

Get a new lawyer. The prior lawyer needs to refund any unearned portion of your fees, if applicable. They theoretically can detain you, so you...

Prove domicile when not living in the U.S. since last 3 years

Do you have a lawyer? This is a personalized and somewhat technical question and you'd be best served working with an attorney in order to get...

What supporting documentation I need to file an I 90 Form?

The advice above is correct

How can I travel please help me

You should be fine so long as you don't go to your home country, though it would be helfpul to know exactly which countries you're talking about.

Is H1B petition denial by USCIS ( not US Consulate.) considered as Visa denial ?

You should talk to the company's attorney, but the answer is most like "no." You haven't had a visa denied; the prospective employer has had a...

Why there are so many RFEs this time, 2013? I got RFE on my H1B from H4 through a consultant, but not yet know what it is.

All you can do is wait for the RFE to arrive and see what they're looking for. There could be missing information; there could be some allegation...

Alien granted Prosecutorial discretion ; the judge took a decision to administratively close removal proceedings. Whats next???

You want to get a lawyer to assist you with the removal case. That is the best thing you can do right now.