Can you imagine having the Social Security benefits you depend upon being cut off with no warning on the grounds that you're a prisoner even though you've never been in prison in your life? It happens much more often than you'd think.
I had a client who was suddenly cut off benefits. When I asked what was going on, I was told that my client was in prison in New Mexico. My client gave a classic response: "I've never been in Mexico in my life!" The New Mexico prison authorities told me that they had no record of any inmate with either the name or Social Security number of my client. It took two months to get the benefits resumed.