There is no appeal. You could try filing a federal court action, or a request for Advisory Opinion.

No, I do not believe there is any difference between a request for initial evidence and a request for evidence.

Since you could travel to the U.S. on ESTA they will be curious why you want a tourist visa.

Since they are immediate relatives, the visa is immediately available and they can file concurrently.

If you are a permanent resident, no you do not have to file for the children separately. If you naturalize, or are a US citizen already, yes, you...

Yes, if she has not overstayed her parole status.

There is an automatic COVID extension of 60 days, but not six months. If it is not available, you can use secondary evidence such as affidavits,...

I don't think there is any dictionary definition. It means they have not made a decision and they are not in the processing of trying to make a...

It depends primarily on where she expects to get her mail and process for the immigrant visa.

There is no rule against you attending college in the U.S.