There seems to be a feeling that more legislation will take care of the problem. Legislation is ignored by criminals. Sometimes legislation and guidelines are ignored by those responsible for enforcement.
An example:
The Dunblane school massacre took place at Dunblane Primary School near Stirling, Stirlingshire, Scotland, on 13 March 1996, when gunman Thomas Hamilton killed 16 children and one teacher before committing suicide and injuring 15 others.

A CLEAR and unequivocal call for Thomas Hamilton's firearms certificate to be withdrawn was made by a detective sergeant to his superiors almost five years before the Dunblane massacre.
His impassioned, written plea included warnings that Hamilton was an unsavoury and unstable character, was scheming, devious and deceitful - and had an extremely unhealthy interest in boys.
But the Central Scotland Police depute chief constable responsible for signing the certificates and renewals dismissed the plea.