Gov. Pat Quinn of Illinois is considering signing a bill that would prohibit state officials from publicizing lists of registered gun owners. The economics of crime suggests that such a list would put potential victims at a disadvantage and help criminals.
Earlier this year, the state attorney general, Lisa Madigan, asked the Illinois State Police to make public its list of registered gun owners. Proponents of Ms. Madigan’s request say the Freedom of Information Act requires the state to release such information when requested.
The police are concerned that a public list would discourage some gun owners from legally registering their weapon, and, as a result, the owner database would be less accurate precisely because it was public. A more accurate list, the police say, helps them protect officers and facilitates law enforcement.
http://economix.blogs.nytimes.com/2011/06/01/listing-gun-owners-might-help-criminals/