Hello I have a question,I used to live in the United States for 21 years illegaly,in 2007 I left the USA voluntarly,

Your priority date should be current in about two years, and you will then finish the process. A visit now should not have any effect.

I have applied for change of status From B2 to H1 in Feb, and my B2 I-94 is expiring this week. if I got denial in COS.

How did you apply for H1B in February when the date to apply is April? In any case you need to leave the US before your visa expires.

I-485 Interview

Your spouse is a US citizen but you do not have a birth certificate? Is the citizenship by naturalizatiion and how did they obtain that without a...

You can petition for your brother and as has been already said the process will take time. If he has a sponsor and s qualified he may be able to...

Can I petition my mother if she has a temporary residence from a marriage but getting divorced?

More information is needed, for example why is she getting a divorce? Is she an abused spouse? She can petition if she shows it was a good faith...

Mine is a genuine case ( have proofs) suited for political asylum. How much differences it will make with or without attorney?

I do not know anything about the facts of your case. An attorney will know how best to present your case. More than just filing papers is involved....

Will getting a marriage certificate affect permanent residence filing?

IT IS NOT CLEAR IF YOU BEGAN THE FILING PROCESS OR NOT. If you did not perhaps you should wait for your marriage certificate.

I am trying to obtain a passport, the passport office will not accept the copy of the birth certificate that i have.

You may have to go to the hospital where you were born as well as the county and look into county records. I assume you were born in the US?

If US deports me by denying my I-751 waiver application, can they send me to another country instead of my own??

You are saying that your EX alleged marriage fraud so you are already divorced? I hope that you engaged a competent immigration lawyer to assist...

I am here on my parents visas unable to get a ss card to work due to me statues has not been update scent i enter the at 5ys old

More details are needed, for example how old you are, when you entered the United States and what type of "visa" you have.