According to "Abnormal Psychology" there is no such thing as a "normal" person. The definitions are fluid and depending on what day it is, could mean (________). Here is an example: a time ago homosexuality was considered abnormal; today it has changed to be no longer abnormal. I have real concern using "mental health" as a means for gun denial/confiscation. Whose to say what determines abnormality? That is where you can be identified as unworthy. For example, today having a desire to own firearms is not abnormal, tomorrow they can change that to be abnormal. Last point to consider; the psychology industry is predominantly liberal so I can see where this could go.
