What are the requirements for L1A extension?

The petitioning company will apply for the extension. You may apply for premium processing to speed up the process.

If someone comes to US on a B1/B2 multiple entry visa can he switch to H1B visa and stay in US while H1 application is pending?

It depends on when you entered the U.S.

Can I file for permanent residency if I was married in 1978 to a U.S citizen?

You seem to have various options. Depending on the merits, which you will discuss with an immigration attorney, one route could be preferred over...

OPT after H1B approval? Am I still subject to H1B cap if I change jobs before October 1? Reapply H1B after rejected in same FY?

1) It depends on when you wish to join company B 2) You will be subject to the cap the first time you apply for H-1B unless the petition is...

Will dates for F2A category move? Also, what are chances of immigration reform happening and its effect on F2A category

It takes about 4 years for a LPR spouse to get residency. The process can speed up if you were to become a U.S. Citizen.

Am I a US citizen?

It depends. More information is required to answer your question.

Questions regarding L2 to L1A conversion

It is not advisable to seek change of status within 3 months of entry.

My Parents have B2 visa for 10 years, How long they can stay in US in one year.

B-2 visa is for visitors. Accordingly your parents are permitted to stay up to 6 months depending on the time allotted by the POE officer. ...

Green Card processing time

It is a long wait of over eight years. You may want to talk to an immigration attorney to see if there are other options for the relatives to...

It looks like this H-1B petition is for a position in a different field than your previous one. Usually evaluations are sent with the first H-1B...