A copy may not suffice but sometimes this might depend on the officer interviewing you. If you don't have the original, perhaps you can explain...

Is it possible to hire a new attorney from another law firm to accompany me for the interview?

Yes, it is possible, legal and is certainly not unusual...

Does that office qualifies as a residency since the lease was on my name August 2014 - August 2015 period?

That question refers to where you physically resided (slept, ate, etc). It does not refer to your office/place of business even if the office...

Do non English documents need to be translated by a professional translator or not?

Any person fluent in both English and the foreign language (French) may perform the translation and this person should certify such and that the...

What can we do to claim him and get him a visa to the united states

Your permanent resident father may petition for him provided that your older brother is unmarried. That would take several years however (5-7...

Can I apply for the waiver by explaining how important is this opportunity for my career?

Merely indicating that this opportunity is important for your career may not be sufficient for the purpose of a J visa waiver. There a range of...

Can i travel inside n outside USA while having F1 student visa?

Travel inside the US? Yes. Travel abroad? Yes provided that it's less than 5 months and that your I-20 is up-to-date with a travel signature...

What is the legal way to bee accepted to settle in TN. If I came to America?

You should discuss your situation with an American immigration lawyer.

Will I still be a US citizen and travel freely back and forth even if I moved to Ethiopia?

Yes, you will still be a US citizen even if you frequently travel back and forth from Ethiopia. You should talk to an accountant however about...

Joining the U.S army with an f1 vsia ( currently out of status)

MAVNI is likely not an optinon even if you speak a MAVNI-qualified language since you are currently out of status. One who seeks to enter MAVNI...