How will L1-A Visa Tenure be Calculated? will it consider H4(Dependant Status) Tenure?

You have at least one immigration attorney representing you and that is who you should discussing this with.

How is unlawful presence calculated and what will be the impacts?

You should discuss this with your immigration attorney. AVVO is for people without an attorney.

What are the requirements for a mentally challenged person to qualify for taking US naturalization exam in her native language ?

She will need adequate medical evidence of her condition and why that condition makes it impossible for her to learn English. Normally CIS will...

Spouse H4 extension and H4 EAD renewal are pending from last 2.5 months at CSC. Suddenly H1B husband got laid off.

You need to discuss this with your immigration attorney. AVVO is for people who do not have attorneys. Good luck.

How can I write a pardon letter for my mom who lived in the US more than 40 years without the threat of deportation, until 2015?

You need to consult with a Board Certified immigration attorney.

Will I be able to work if my L2EAD is not valid anymore but my COS(l2 to H1b) is filed already?

You cannot work until the H-1 is approved.

I am a F-1 student, I got a job online can I work?

You cannot work except on campus or if you have OPT (pre-completion) or CPT.

Your only option is to forgo the change of status, change the case to "notify the US consulate" and go get an H-1 visa and come back. Everything...

Possible options to take the baby back to India?

You need to check on this because I don't believe India recognizes dual citizenship, although that may have changed recently.

How to respond to RFE letter?

If you do not get this application approved there is no reason to apply for citizenship. You need more evidence and a legal argument. This...