How old is his old letter? If it was from a decade ago I could see it being reasonable but if it was just last year then that would seem a little excessive. Is it just a second opinion type thing to verify he is not an addict anymore? I don't understand how the addiction factors in, did he mention it on an application previously?
Are you serious? Read the OP again. Feel free to ask for help with comprehension.
Terry voluntarily sought alcohol treatment in 2015 and no longer drinks.
If it was from a decade ago I could see it being reasonableIf you get a letter saying you are no longer at risk pertaining to owning guns, what do you believe the expiration for that letter should be? 3 years? 5 years? Whatever the person at the firearms section desk says it should be? Is there anything in the statute that says there are expiration periods for clearance letters?
Absent any EVIDENCE that's uncovered during the background check, such as a DUI charge/conviction, there's no logical justification for requiring another letter. It must be assumed that the original problem was treated successfully based on the first letter, or else the doctor is lying or incompetent.
One clearance letter per disqualifying mental health issue is sufficient --
forever, as long as there are no further documented problems related to that issue.