US Immigration from Argentina

Hello. I've read what I could find about this and hope for any info and/or suggestions.

I'm U.S. born, wife is Argentina-born, we moved to U.S. with K-1 visa and married here 5 years ago. She is now a naturalized U.S. citizen.

She has 3 adult children still in Argentina (my step-children). All have spouses but none legally married, one has 3 year-old child.

1) What is the best way for us to get our children to the U.S.? Would my wife have to file I-130 for each, or are there other (better) ways?

2) Would we have to prove our ability to provide support for all ($21k +/- times 3?). All three speak English but none have a college degree (though one is getting close and works for a multinational corporation)

3) Is there a best guess as to how long it would take for our children to actually be able to come to the U.S.?

4) Is there anything that can be done for our son-in-law and daughters-in law, and how long might that process take?

Any information, idea, or suggestions would be greatly appreciated.

Many thanks...

My spouse and I are moving 1000 miles to a different state in 10 days (LA to CT). Our interview was scheduled 3rd week of May but was canceled due to unforeseen circumstances.

I understand there will be a delay in the AOS interview in the new state; how much of a delay should we expect? 3-4 months? 6- months or years?

We had no option but to move or starve. I have my EAD/AP but worried about the long delay for the interview.

Also, Can we file AR-11 2-3 days before moving to the new place?

I have noticed that some 129F s move through the system much faster than others. I see a few applications from as late as November already with NOA2 while others from last summer still lagging! Is it how much documentation was filed with the application? Country where beneficiary resides? Anyone with any answers?

Thanks Keith

My EAD was approved and shipped on 4/7 to my attorney's office. It was supposed to be delivered yesterday, but the status changed to "Awaiting Delivery Scan."

It further mentions, "The delivery status of your item has not been updated as of April 12, 2021, 09:10 pm. We apologize that it may arrive later than expected."

The status has not changed since. Does anyone have any similar experiences? How do I navigate this with USPS and USCIS?

I have received EAD/AP approval notices, but not the card. I have seen few horror stories where the card never gets delivered and is lost by USPS.

Anyone else who has a recent application for a K-1 case filed at the Texas service Center? Our application was received last week, just curious if anyone filing in the last 30 days has received notification

Thanks