I just got laid off while on L1A, am planning to file COS to B1, how long should I request from USCIS for COS

You need to hire an immigration attorney to discuss your options. COS may be difficult since you are no longer maintaining your L-1 status.

Deniel of N-400. Will that affect my green card status?

Based on the information you have provided, I think you are okay. Depending on the circumstances of your travels, an attorney may be able to assist...

Im a LPR applying for reentry permit, do I also have to apply reentry permit for my 1 yr old baby who is also a LPR?

I would recommend you file for both of you. You should do so only after consulting with an immigration attorney.

Can I get a green card if I entered the US ilegally as a Child?

It is impossible to answer your question with the limited information you have provided. You will likely qualify for Deferred Action (DACA) if you...

Do I need to bring an attorney to an interview?

Presence of a competent attorney can be extremely valuable at a USCIS interview. I would strongly advise anyone to have an attorney present at an...

Can employer hire an attorney after submitting an appeal for H1b denial?

Yes, the employer should hire an attorney as soon as possible.

Frequent administrative processing

There is little that you can do at this point. The consulate officials have a broad discretion and they do not have to follow the USCIS.

This question is better suited for the family law section of this forum. Please post this again the family law attorneys can offer some insight.

This suggests you need some help. I strongly advise you have an attorney handle this to avoid further delay in the process.

H1 B, transfer case

You can work for all of those employers as long as your employment continues to be in compliance with the LCA. It appears that at least one amended...