Unless he has valid, nonimmigrant status, he will be subject to removal from the U.S.

Excellent! That's very good news. Did you have a question?

No. If you are not filing for adjustment of status, you do not file the 864 with the i-130.

You should follow your lawyer's advice.

No. Leaving the U.S. after a change of status to U visa, does not remove any unlawful presence bar to admission.

There is no waiting list. You should follow up with NVC to ensure they got it.

If your husband is trying to sabotage your immigration, you may wish to end the marriage and request CIS to amend the 751 to a waiver.

You can file to change status back to H1b even before the change of status to H4 is approved.

There is no requirement for a sibling to live with their sponsor when they arrive in the U.S., or after they arrive in the U.S.

To become a U.S. citizen, you can be born in the U.S., you can be a derivative citizen through your parents, from birth, or when they naturalize,...