Is derivative asylum received from a parent the same as an adult being granted asylum ?

Derivatie asylum is not the same as being the principal asylee. A child can "age out" and then when trying to adjust status may have to file their...

I am a General Service staff member in the UN Headquarters with G-4 visa. How can I apply for Permanent Residency of the US?

Consult with an attorney to review your options.

If i have two charges of sell / deliver in sept of 1996 do i qualified for the Cly wavier ?

I would suggest a consultation with an attorney who can go over the details of your immigration and criminal history and then advise you accordingly

Do i need an immigrant attorney!?

YOu can contact CIS and tell them you are no longer married, living together...

How does USCIS define " living with the same U . S citizen for the last three year " for N - 400 .

Vacations are fine. There is no magic definition of "living together." You are probably fine based on what you have indicated above.

Need help with spouse visa . . her DOB on Indian passport is different than her DOB on her birth certificate

Yes, it will cause problems. If the birth certificate has the correct date, why not have the passport reissued with the correct date as well?

Letter of Invitation for a B-2 visa holder

You need to file an offer of employment letter and various other documents when you petition for the H1B

Can I make correction to my green card application after the approval.

You can ask for a new card to be issued with the correct information. If you are the cause of the mistakes, prepare to pay a filing fe.

Can I go for Employer transfer??

Your new employer should file for a new visa for you.

You can be refused a visa for misrepresenting information in the application, or for misrepresenting information in any prior application