J-San

Yes, it will ask you to submit required documents. Generally police clearance is requested. 

Their A number is on the visa. https://www.uscis.gov/forms/filing-fees/uscis-immigrant-fee/immigrant-fee-payment-tips-on-finding-your-a-number-and-dos-case-id
 
They can pay it after entering the US by the way, it just won’t be produced and sent until they’ve done so. 

Thanks for everything all the support I really appreciate, my visa got issued this month and I’m currently in United States ❤️

PD: 01/27/2023
I-130 Approval: 12/26/2023
NVC Docs Submitted: 01/11/2024
NVC DQ: 01/16/2024

If you and your apouse file taxes joint then yes, he needs to fill out I864A as a household member, not as a joint sponsor.

You’re to the NVC stage? When you log into CEAC look under applicant information. The last column should be  civil documents. Upload there. I can’t remember, that section might not open up until you’ve paid fees and filled DS-260.

I received the NVC welcome letter by email on 12/30.

PD: 01/27
Approval: 12/26
 
 

I prepared my parents for the interview using random online questions I put together. Same questions were asked at the interview. Parents were interviewed together, most questions were directed at my Dad.
 
Dad's Questions:
Introduce yourself How did your son go to America and the year Where does your son work Where does your son live Tell me about his family(spouse name, kids and their ages)  
Mom's Question:
Introduce yourself Mom dropped her middle name via a sworn document in 2018, they asked if her current name (first & last name) is what she's always used after the change.  
Note: At the minimum, your mom should know the following:
How you went to the US as well the the year. Where you live in the states Where you work Your family life ( if married, spouse name. If you have kids, she should know their names and ages) I went online and put together questions which I went through with them via zoom and regular calls for two months.
 
Evidence of relationship
We submitted receipts of monthly remittances to both parents for the past two years Pictures taken in 2019 and pictures when I was 6 and 15 years.  
 
 
 

My mom's immigrant visa was issued today 12/22. She will pick up her passport on 12/29. Let me the share the petition experience, hopefully it helps someone.
I filed for both parents in June 2021.
USCIS approved both petitions and approval notices dated March 2023 were sent to me.
Received notification from NVC in March 2023 to complete form DS-260 as well as upload all supporting documents through the online portal.
My parents don't have birth certificates, they used a  Sworn Affidavit(SA). The same NVC officer who reviewed the supporting documents approved the SA and marriage certificate for my Mom but strangely rejected same for my Dad. I had to write a note to them via the online portal, drawing their attention to their own guidelines regarding the rejected documents before they were approved.
NVC approved all docs for my Mom in April 2023 and for my Dad July 2023. NVC also informed me that were working with the US Embassy in Accra for an interview date.
Friday September 22, 2023 at 8.17pm central time - I requested  for an update via "Ask NVC - Inquiry Form" and on Tuesday September 26 at 7am central time, NVC responded with the scheduled date for the interview.
Interview was on 11/29, Dad's visa was approved & issued but my Mom's was placed on administrative processing because they were yet to receive the medicals she completed on 10/12/23.
I sent an email to Akai House Clinic and they confirmed sending the medical to the Embassy, they also added that the turnaround time is 10 days after the exam so I believe my Mom's medicals got to the Embassy the week of 10/22/23 but someone just didn't do their job by updating my Mom's records. 
I asked the US Embassy in Accra via https://shorturl.at/dkoM2  on Wednesday 12/21 to confirm receipt of the medicals and also provide an update.
They responded the next day acknowledging receipt.
Visa was approved & issued today 12/22.
My parents will be leaving in March 2024(last week preferably) 
They will fly United from Accra to Chicago via Dulles airport
Cheers!
 
 

Somebody will be happy to help I’m sure. Or you can start your own new thread if you prefer. 

Wait for Welcome letter from NVC, wait for Invoice number from NVC
both are needed to pay the NVC fees starting here : https://ceac.state.gov/IV/Login.aspx
 
start preparing your documents for parents. Mine are filipino in UK so they need ACRO police certs and Nbi philippine clearance. and also yes tax transcripts - show you meet the income guidelines or if not prepare to have a co-sponsor.

Importing a parent is pretty simple so unless there is something really unusual then it can be done yourself, after all basically it is about showing that you are a USC and that they are your parents
 
I do not know what your father's skill set is but it can be tricky to get a job in your 60s especially with good benefits and who knows what the job situation will be in a couple of years.
 
Most people think of immigration being long term,  insurance is annual so all I can comment on is what happens now. California excepted they are probably looking at buying through the exchange for at least 5 years, in US terms cost and cover may not be too bad, bit it may be a shock to them.
 
I believe it is simpler to sell their house before they make the move.