謝謝8老師。答疑解惑，助人為樂。讚！

I buy your explanation and reasonings.
The part of I-94 included or not is very informative.
I agree the part of confusion can be ignored. I think it could also be due to some standardized form of contents which is not so applicable to me.
So I will go to apply for H1B visa next.
A follow-up Q: emplyment verification letter=>is the offer letter (with title, pay, term,...)from the department head and the Dean with my signature for acceptance OK? Or do I need to ask HR to produce a separate letter? The offer letter is a copy as the original letter was signed and returned to the department head and Dean.

I like to sincerely thank you for your help.