From Columbia Daily Tribune:

Missouri’s latest proposal, introduced last week, would attempt to nullify certain federal gun control regulations from being enforced in the state and subject law enforcement officers to criminal and civil penalties for carrying out such policies.

The state’s GOP-led General Assembly came one vote shy of overriding Democratic Gov. Jay Nixon’s veto of such a measure last year. This year’s bill adds a new twist, delaying the effective date for several years to allow time for other states to join the cause.