H1B Transfer with multiple employees and H4 I-539 extension along with it

You should wait to see if the A transfer is approved. Then you can ask B to initiate a transfer.

Can i enter USA while i have a ban for illegal staying for 10 years?

Don't try to be more illegal ... again. Changing your name, trying to 'hide' your identity with a Canadian/Australian passport could result in...

Can I revoke my H1B petition approval from 2008?

First of all, it is not "your" H-1 ... it is the property of the company that paid to file the papers. Why do you think it is necessary to...

Hello, I am a doctor who is currently on a J1 visa. I wanted to know if I can file for EB2 NIW I140 while I am still on a J1?

Although you can file the I-140, it is better to get the waiver so you can file the 485 with the 140.

Talk to a landlord/tenant lawyer ... there may be an executive order forbidding this.

Change of status or extend my visa?

Technically, if you don't get a divorce, you can extend the E. But, depending on your long-range goals, you might want a different visa.

With COVID-19 ... there is no 'usually' any more. Is your EAD still valid? If it expires within 5 months, file form I-765. Yes, if you have...

How to convert current non immigrant visa status to another?

An EAD is NOT a status and can NOT be used to re-enter the US ... unless it is a combo-card with Advance Parole. What is the basis for the EAD?

Am I able to start a company and apply for an LLC while being a non-US citizen?

Yes, you can create a LLC ... but why? What is your goal for a 'professional look' if you're not planning to work.

I765 Signature verified by the Lockbox?

Yes, that would be safe to assume. Try to make photocopies of EVERYTHING in the future.