Unlike some other amendments whice state “Congress shall make no law”, the 2nd amendment does not refer to the federal government alone. It says “the right to keep and bear arms shall not be infringed” ... which implies that it shall not be infringed by anyone.
This will be another in a long list of laws passed to say we did something to keep us safe from _______ in response to an event way into the tail of propablilities. How exactly can the use of trigger locks be inspected/enforced? If I duct tape it to the gun, then does that count as being on? What exactly constitutes a trigger lock? Are there certified manufacturers, licensed distributors? Is there a QA program for the metal used in the trigger lock? Does an independent agency routinely inspect the manufacturers to assure that the locks produced do what is intended?