My US citizen uncle filed F4 for my parents. But now i am 28 yrs old and married for 3 and half years and 2 children.

You no longer are a derivative beneficiary.

Can a TN visa holder, get sponsored by his company for L1 as long as he meets all the requirements.

Yes the company can file for you. The company is the petitioner and they have to hire and pay for an attorney to process the paperwork.

What happens if my mother's I-94 expires while my mother's I-130 is pending. Can I apply I-485 now?

She can file, but now that you started the process on your own is a bit complicated as long as the I-130 is pending. Hire an immigration lawyer to...

Currently i have my temporary green card do i have to go like the first time to get my permanent green card what do i have to do

You have to file for removal of condition through form I-751. Consult/hire an immigration attorney near you as the process can lead to big problems...

Adjustment of Status

No you can't adjust based on the petition your mother filed in 1991 because she is no longer a Permanent resident and you are now married....

Do I need to get paperwork for Naturalization

Yes you have to disclose arrests and convictions in the past. However, before you apply for naturalization is best to get the records and have...

My Immigration Case has been Denied and is put in Administrative Process.

Usually is not much that can be done once a case as been placed in administrative proceedings. It has to run its course. However a consultation...

B2 Visitor

It all depends on the activities you intend to engage in the US. If you are just visiting, you should be ok. However the final word is up to the...

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Asylum.

You may be asked why you did not apply in UK. Consult/hire an immigration lawyer to help you.

Immigration

Consult an attorney in person, who after hearing the particulars of your case can properly advise you. I-751s can be tricky.