2 things. Firstly, with as basic as this infraction was, I would be shocked to think you would get deported over it. In fact, I have never seen or heard of anyone getting deported for accidentally registering to vote and not voting.
Secondly, I would be cautious using letters from these "officials." I had a letter from my US Senator saying how wonderful I was, but my attorney told me that he strongly suggested I not include it because it can pi$$ the IO off. Don't shoot the messenger here - this is just what he told me. I didn't end up using the letter...
Good luck
Thanks for the response and duly noted on the letters. It did cross my mind that it might get their back up. Maybe i will save the letters in case i need them down the line.
Its funny that you call it a basic infraction, others seem to think its much worse. Did a similar thing happen to you? Is that why you had a letter from your Senator?