Do I really need an immigration attorney for an AOS green card request? Is this an expensive process?

once she is here as a tourist you can marry and apply for her after marriage, and as to attorney need, unless you are very well versed on this type...

If I file for my parents when I turn 21, will they be able to file for my minor siblings in the process?

yes after they receive their green cards through you, and as long as your siblings remain single they can petition for them as Permanent residents.

Special Circumstances / Family Based / Political Asylum Immigration eligibility question..

you may have a claim for asylum, but you will require an in depth consultation. the fact that your brother is a USC does not help you, and you can...

Made 2 H1B applications and both got picked in lottery. The case status of one of them now shows fee refunded.

Asked and answered. The case not selected for processing is refunded to the employer.

Will my friend get in trouble ?

As long as she did not impersonate anyone and immediately applies for a valid as number and if she is not already in hot water with authorities...

My mom enter with no visa, she has two child US citizens over 21, she will need to go to city of Juarez and wait 10 years?

Yes it is true if she ever left the U.S. Or and to leave. Ask long as she remains in the U.S. Without leaving she will not be subject of the bar...

Asylum and EAD Clock.

Your mother or sister or both can file a petition for you so you can later adjust status if you can stay here legally until then. No to second...

If you applied and have in your position the advance parole issued to you then you have no issues otherwise it will be considered that you have...

Received the Receipt Numbers for h1b this year but later case status shows -"Fee Refunded" in USCIS website.

As you stated you have applied for two cases and only one is selected thus a refund is made for the case not selected most likely.

CITIZENSHIP

of course if any information in your file caused the denial or if you had presented any issue at the interviews to result in denial, but normally...