Yes. Unfortunately, over the last 20 years there have been several homicides and suicides that have been carried out by licensed firearms holders who have been suffering with mental health conditions. As well as being potentially avoidable tragedies, any such incident involving legally held firearms can be damaging to shooting. Therefore, any proportionate methods for reducing the risk are to be welcomed. The risk, however, can only ever be reduced, never eliminated.
In his latest OffBeat blog, Bill Harriman discusses the reasoning behind BASC's support of medical markers for certificate holders.