Is it possible that a derivative I-485 application gets adjudicated ahead of a principal I-485 application?

They shouldn't because if he's denied you're not eligible. You should both postpone. If he simply doesn't appear his case would probably be denied...

Would it be beneficial for an immigrant in the US with a citizen mother to apply to the DREAM Act in order to work?

I agree with my colleagues. Talk to an immigration attorney before you file anything. You aren't an immediate relative since you're 28 and that...

Can USCIS ask for more evidence after accepting motion to reconsider ?

You should ask your employer's attorney these questions.

No you can't use it and you cant' change your status in time. Just leave on the 7th. You will at worst accrue 1 day of unlawful presence.

Husband's L1B expires on Mar-19,2013. Can he apply for B2 for his and my parents with L1B extension petition document?

Your parents have to apply for a B2 on their own it isn't based on your husband's L1B. If they're visiting someone in status it shouldn't be an issue.

Can 2 companies apply for my H1 VISA transfer?

If you didn't leave company A no but job hopping like that can be risky. Ask the attorney filing the petition.

What will happen if my H1 transfer failed ?

If you're qualified for an H1B visa it should be approved even if there were prior rejections. But without knowing why the visa was rejected it's...

My fiance reentered the US after being deported. Twice. Can he adjust his status once we get married?I am US citizen.

He is likely subject to a permanent bar if he reentered unlawfully multiple times. If the murder charges are gone then you need an attorney to try...

Is it possible that <my wife>H4 visa can be transfered to H1 if any employer will sponsor?

If an employer files an H1B for her in April and it is approved she can start working in October but not before. Assuming the employer is not cap...

At the final immigration court the judge said this case terminated without prejudice and told me to go throught USCIS ,

Sounds like that's a good thing. I assume the judge is telling you to adjust your status through a petition filed with the USCIS but that's just a...