Yes, you can port to a new employer with your current application pending.

It depends on what the conviction was, and what is the status of the law regarding the conviction in your jurisdiction.

Since you did not file the application you cannot withdraw it. Perhaps you can have clear travel plans that do not include meeting with any...

One does not need sponsorship for citizenship. What do you mean?

Submitted them where? Rejection presumably means that USCIS sends back the application, for example it is not signed or the fee is wrong. Denial...

There is no maximum gap. You can wait as long as you wish or not file the 485 at all if you don't wish to do so.

Yes, a J2 should be able to change status to F1, even if subject to 212(e) two years home residency.

You should include it. Regardless you are required to provide the information about your marriage.

Just notify the asylum office and they should make a decision on the application.

No, one does not need any waiver to be granted an immigrant visa, based on withdrawing an application for admission alone. If there is any...