There is no rule against it. You can file as many self petitions as you wish to file. If you do not like that one the company filed, of course...

I am not aware of the Social Security system being required to update one's status from permanent resident to U.S. citizen and I have never heard...

It is permissible to change status from H1b to L1A without leaving the U.S. Yes, there is no rule against doing such a change of status.

List all of the countries where you traveled, before, during and after you came to the U.S. and you cannot go wrong.

It seems to me that if you have an unexpired visa and a new I-20, you should be admitted and you should not need to get any new visa.

You can file a visa petition for your spouse whether or not she changes the name on her passport. She is allowed to use her new married name.

I'm not sure if this will prevent her from adjusting status. But in the meantime, she cannot file for her spouse or children to immigrate to the...

You should ask a Philippines tax lawyer or accounting any questions you have about Philippines tax laws.

You will need to establish his legal paternity and his relationship with you in order for an out of wedlock father to file for you.

The duration of your H1b will be limited by the expiration date on your passport, so you can and should file to get a new passport.