You can travel on your H-1B while your PWD is under process. No travel restrictions. Since H-1B is a dual-intent visa, you can also travel while...

Hard to tell just from what you have provided. I would recommend you to contact an immigration lawyer and show him or her the full RFE and get...

He can start his own company but in order to do so, he will need a new visa called E-2. More details are needed to see if he is eligible though.

They can generally stay inside the U.S. while their B-2 extension applications are still pending at USCIS.

You need the receipt notice. I would recommend you call USCIS and explain your situation to see if you can get another copy of the receipt notice.

If that is all you helped her with then the answer would be no. DS-160 visa application for B-1/B-2 would not be considered a petition.

Her U.S. passport should be fine. Her date of citizenship is when her U.S. citizen parent naturalized.

What your old employer can do is file nunc pro tunc H-1B petition on behalf of you to get your H-1B status back.

USCIS sometimes loses documents they receive... Unfortunately, the best solution here would be to take another medical examination and send the...

It should be fine as long as you file I-539 timely to extend your B-2 status. It should not affect your re-entry later.