TIL there already is a gun registry in America

http://en.wikipedia.org/wiki/Firearm_Owners_Protection_Act#Registry_prohibition

Quote:

Nevertheless, the ATF Firearms Tracing System (FTS) contains hundreds of millions of firearm tracing and registration records, and consists of several databases:

1. Multiple Sale Reports. Over 460,000 (2003) Multiple Sales reports (ATF F 3310.4 - a registration record with specific firearms and owner name and address - increasing by about 140,000 per year). Reported as 4.2 million records in 2010.[8]
2. Suspect Guns. All guns suspected of being used for criminal purposes but not recovered by law enforcement. This database includes (ATF's own examples[citation needed]), individuals purchasing large quantities of firearms, and dealers with improper record keeping. May include guns observed by law enforcement in an estate, or at a gun show, or elsewhere.[citation needed] Reported as 34,807 in 2010. [8]
3. Traced Guns. Over 4 million detail records from all traces since inception.[8]This is a registration record which includes the personal information of the first retail purchaser, along with the identity of the selling dealer.
4. Out of Business Records. Data is manually collected from paper Out-of-Business records (or input from computer records) and entered into the trace system by ATF. These are registration records which include name and address, make, model, serial and caliber of the firearm(s), as well as data from the 4473 form - in digital or image format. In March, 2010, ATF reported receiving several hundred million records since 1968. [9]
5. Theft Guns. Firearms reported as stolen to ATF. Contained 330,000 records in 2010.[8] Contains only thefts from licensed dealers and interstate carriers (optional).[8] Does not have an interface to the FBI's National Crime Information Center (NCIC) theft data base, where the majority of stolen, lost and missing firearms are reported.[citation needed]