What happens to a valid STEM extension after H1b cap gap is over?

I agree with my colleagues, don't try to 'double-down' on your options.

I got my H1B extension approved with all the information correct in I797. But while checking the packet saw there was a DOB typo

The 797 is the important document ... not the petition.

L-1 to H-1B , no premium?

No, you can not start a CoS from L to H with nothing more than a fee receipt.

Corona-virus, suspension of premium H1B, EAD expiring soon, can I WORK & STAY- after, provided H1b application in the process?

Premium processing wasn't suspended because of COVID-19 ... it has been suspended every year for at-least 6-7 years. No, you can not work after...

Obtaining permission to stay beyond the 90 days ESTA period due to COVID-19 pandemic?

You need to make alternative plans & purchase protective facemasks/gloves.. The most that CBP will grant is 30 additional days. Plus, you...

864ez or 864?

1. We never use the EZ form 2. The I-864 is never sent with form I-130 ... it goes with the I-485, or DS-260. Talk to an attorney so you...

How can I get a permanent residency for my mother?

Are you sure she is in the US on B-1 and not B-2? Look at her arrival stamp and download her I-94 from www.cbp.gov/i-94 Did you know that the...

You forgot to tell us the most important things. Does he have a greencard? Does he have a DACA EAD? Does he have an unexpired I-94 and visa?

Is it late to apply for change of status from F1 OPT to F2?

No, it doesn't appear to be too late ... talk to the DSO at the school.

My lawyer lost my original NIW-I140 approval notice. I have a photocopy of it. Do I need to request another original from USCIS?

If the attorney mailed it ... she didn't lose it ... the US Post Office lost it. Unfortunately, too many attorneys have their...