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When I was a student in US, I had some hospital related debts and I could not pay all the debts, and they transfer it to a collection agency. I still could not pay, but I will hopefully. I recently applied for a tourist visa, and my interview was good, had no problems. I wonder if I would have any issues regarding the approval of the visa or not (because of having a debt in a collection agent).
P.S. I know it is not good to have a debt. But, you may know the health system in US. I will pay it sooner or later.