All such matters are stayed since there is litigation regarding whether new DACA applications are allowed. So following up will not get any decision.

The i-140 approval is not a basis to deny you an h4 visa.

I believe you are correct and that your medical exam is still correct. You can print a copy of the notice and send it to USCIS.

If it is a violation of your status, on your next application with USCIS you will have to disclose the violation.

Yes, you can get an ESTA even if you have a visa to visit the U.S.

Yes, a person can get arrested at USCIS if there is a warrant for their arrest.

It could affect your ability to port to a new employer if there is evidence that you are not working where you are supposed to be working.

It depends what you appealed. You will have to sue to get an EAD based on an appealed I-485. You cannot get an EAD based on an appealed I-130...

If you are not authorized to work, you are not authorized to start a business.

If the visa is available, you should file the 485 now. If not, you should file it when the visa is available. They are taking about a year to...