Procedure to apply for L2 visa extension based on L1 visa date...

You can file an application to extend L-2 status coterminous with the L-1 status of your husband.

Question about F-1 student visa approval after semester start date.

She will be out of status if she does not attend classes while remaining in the US. She needs to consult with the DSO and/or an immigration...

If a landlord sue me, can it affect the issuance of my future Visas ? What will be the consequences in terms of immigration ?

Any civil dispute should not generally affect your admissibility to the US.

Can I apply for student visa (COS) before my extension has been approved?

You can, but the extension must be approved in order for the change of status to be approved, which probably will not happen.

With an approved I-129F from USCIS,will I-601 waiver be the reason for denial of K1 visa on the interview at the US consulate ?.

Consult with an immigration attorney. You may be going about this in the wrong order.

I-94 card is lost 6 years ago,no copy left,just a stamp in passport. AOS in a month,no time for I-102 Could I be refused!??

You need to prove a procedurally regular admission, which does not necessarily require an I-94.

? Regarding marriage and petitioning resident card for my lesbian girlfriend. I'm wondering would it be safe or a red flag to

Your case would raise many red flags. USCIS is trained to suspect fraud and there are several indicators of that here, which would need to be...

I got RFE after my interview in houston office. how long will it take to get processed ?

Up to 90 days would be normal processing time.

I-360 question.

It is unlikely that the TPS is holding up the I-360 or vice-versa, however, it could be the same issue holding up both; such as the background...

You are waiting for your visa interview. Follow-up with the Embassy.