I passed my citizenship exam on MAY 2015 but no decision was made..

It may take 30-60 days. Usually there is one or maximum two oath ceremonies per month. Hopefully you get it soon.

H1-b visa

You can mostly likely get this done. I would recommend for you to speak to an immigration attorney to discuss this further.

What is process for H4 - F1 Change of status?

Yes, you can do that. I would recommend for you to schedule a consultation with an immigration attorney to get answers to all of your questions....

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Anyone can open a restaurant. You can read online how to register a business.

What are my chances of getting my green card after over staying for 3years on a J1 visa with the two year residency requirement

You need a waiver of the requirement to spend 2 years outside of the US. If you get this waiver granted, you do't have to go outside of the US for...

Can an F1 Student who has a company in his home country open a subsidiary in US?

Yes, a student can open a company in the US.

You may be able to get proof of birth from Saudi consulate. Some people are able to do so if they are not able to get a birth or marriage...

F1 student visa EAD

See if you can extend your I-20 through your school to get a longer lasting EAD.

N 400 Part 11 Item 16

Answer yes. Add a short explanation of your position. You will be asked more specifically about your job at your citizenship interview but you will...

Whether My wife is H1 cap exempt?

How many total years has your wife been in H visa status. It's not clear if she has been in the US for 3 or 6 years now.