I also get this question about if I can sponsor a USA visit visa to my friend family or a relative, please find details below.
What does sponsorship means?
Sponsorship means that you are taking the financial responsibility of the person visiting you in United States. Sometimes you want your family to visit United States but they don’t have enough money to visit you in United States, in that case you can sponsor them financially. You would need to fill all sorts of documents as proof on income.
If you have decided that the trip will be funded by a loved one, you will also have to mention it in DS-160 visit visa form since there is a questions about who is paying for your trip.
Does sponsorship means my family or friend will get the visa?
No, it is not the guarantee that they will get the visa however sufficient funds to cover the cost of the trip is the essential part of the trip. If they do not have enough money to even buy a ticket, there is no point for applying a visa. Its better if they have amount in their account since it shows ties to their country however if they don’t have you can financially sponsor.
What documents do I need to sponsor a visit for my relative?
Please find the complete details about the financial sponsorship documents here