Should states require a psychological evaluation signed by a medical examiner before allowing citizens to purchase a firearm?

Firearms Laws for the state of North Carolina

Research the firearms laws for the state of North Carolina. Is North Carolina an Open Carry State, what does that mean? What are the requirements to obtain a Concealed Carry permit in the state of NC?What is the cost?

Should states require a psychological evaluation signed by a medical examiner before allowing citizens to purchase a firearm?

Be sure to include references to support your view.

What is one of the greatest unsolved mysteries of history?Why do you think people remain so interested in this mystery?