In VA we do secure our own financing but, after doing so the loan is sent to the USDA/Rural development office for the state in order to be underwritten by them as well. So yes you do secure your own financing but the loan has to be approved by USDA/Rural development before you can close.
When you say USDA, I think you are referring to the old Farmers Home Administration or FMHA if the Initials are correct.
The USDA, contrary to popular belief, not only inspects chickens and cows but also sells prime USDA Real Estate. I do not however think that they process loans. They want you to secure your own financing.
You may want to check your details and do a repost of your question.
you non-agent friend,