The national dialogue on gun control has focused attention on the National Instant Criminal Background Check System (NICS). Federally-licensed gun dealers in all states are required to run a check through the system on any customer looking to purchase a gun. Critics, though, see a flaw in the program. While all states are asked to contribute information to the system — on their convicted criminals, drug abusers, mentally ill — they are not required to. Audie Cornish speaks with Steve Buford, an administrator for the NICS program in California, which is one of the leading state contributors to the database.