Is it illegal to be married to the same person in 2 countries?

You can marry the same person as many times as you like but if you marry more than one person it is bigamy

I am going to apply for H-1 in April and once I get approval in May then can I apply for H-4 or should I have to wait until oct?

If you are changing status you can apply for both at the same time but remember you both need to be in valid status through October 1 of this year.

Adjustment of status.

Yes. If it is filed propyl they can stay beyond their expiration.

Second Time My Dad Has An Immigration Hold Is There Anything We Can Do To Keep Him From Getting Deported?

If he was deported and immediately came back there is. There is not a lot that can be done. Best to take everything to an attorney and let him or...

You need to talk to your lawyers. Perhaps they can file for an extension of the L and you can continue to work. Otherwise you should be ok not...

Does the location where you applied for the re-entry permit (expedited) affect the processing of biometrics/application schedule

The appointment letter generally is issued within three weeks from receipt. The location you are called to is based in the address you used on the...

How long will it take to get my approved work permit card or whatever it is for employment authorisation?

They did not approve it. They are processing it. You will receive a paper approval and the card itself shortly.

I am on J-1 (no 2 yr req) and will switch to H1-B in 3 months. How to bring my GF?

Yes if she really wants to study and is accepted by a school and the consul issues her a visa.

Can I use general Delivery mail Address until I can get a p.o. box to file my Asylum application?

USCIS likes street addresses for all applicants.

L2 EAD and just got my H1B petition approved - Have H1B petition approved ; H1B visa is not stamped in passport.

You can only have one status at a time. When you became an H the L was gone. Now you need to be repetitioned