L1A to Green card process.

If it is a new office visa, you would be in need to first get a successful extension of it beyond one year.

About legal adoption....

You need to complete the process with that court before the child will become your child for immigration purposes.

Should I use my F-1 OPT EAD card to get California Insurance agent license?

Application for a license and taking the exam is not unauthorized employment.

Can I marry someone staying on a tourist VISA (in the US), and then apply for the CR1 after they return home?

Such marriage would have no adverse effect on the subsequent I -130 application. You cannot file for K1 once married.

In general, you have to apply for asylum within one year of arrival to the USA. There are some exceptions. One of them is when you maintained your...

U VISA IMMIGRATION USCIS ?

Unless you are granted a deferred action already with recommendation for approval, you are not eligible for EAD.

General rule is that you could but the consulate needs to agree to accommodate your request.

Can I travel to US with expired H1b stamp ? I have valid H1b approval however my earlier H1b stamp in passport expired.

Apply for a new visa when you are abroad. Schedule your visa interview before you leave to save time. Look into Dropbox availability.

What is the future of unmarried children of US citizen (F2B category) after recent meeting at White House for immigration laws?

I do not think that F2B category would be abolished in the future so I am not sure that your convert is grounded.

Iwant to gift usd 20000 to my son?

I agree. It is more like a tax problem then anything else.