It is not recommended since DHS does operate at the airports and can inspect people for their immigration status.

Sure, if you get a waiver under 212(h) of the Immigration and Nationality Act.

If she has an EAD, she can work in the U.S. for a foreign company, a US company, or even for herself.

Most likely you can get back in, but I suggest contacting CIS Customer Service to get a passport I-551 stamp instead, as an emergency.

I suggest you do it on a blank sheet to avoid problems.

Yes, the person can be admitted on an F1 to complete their OPT. Note that the individual will not automatically become an H1b if they are not...

There is no need to wait until the end of the fiscal year to get married.

If you don't respond, they will send the visa back to USCIS for revocation. If you do respond, it depends on what the facts are. There may be...

If you cannot consular process then you will have to find a way legally to be admitted or parolled into the U.S. to adjust your status.

Yes, you can file an I-130 for an unmarried daughter even if there is a typo on your card.