So you really don't care how easy it is for the mentally ill or criminals to obtain guns. And why would I have to give criminals access to law enforcement computers? You assume that a "law abiding" private seller would have only a single option to determine if the buyer is disallowed to make the purchase.
You're not very bright.
Funny how you didn't actually answer my question. the simple fact is that the only reason background checks are not required for private gun sales is that no one can figure out how to require them without giving everyone access to the law enforcement databases that are used for them.
Bullshit. Licensed gun dealers have access to data entry screens, not access to law enforcement databases. You're probably too dense to understand the difference. You could also just use a telephone for private sales, or have a purchaser produce some official documentation that he's entitled to own a firearm.
The reason we don't do anything at all to stop private sales, is because the right wing doesn't want to. They could care less about criminals or mentally ill having access to purchase firearm.
Data screens? What the **** are you talking about? Is a data screen some type of magical device that can determine if someone has a criminal record without accessing some type of database somewhere?
Let me explain some facts to you, when they first started to require a background check to purchase guns they used the waiting period to give police time to run people's names. The problem was that police, who actually prefer that no one have gins but them, often didn't actually run the required checks. States tried to mandate them anyway, but there were excuses about lack of funds and manpower.
Then we got the internet, this allowed states to set up a central database that police could use to perform checks quickly, but they still didn't want to do them. States then gave licensed dealers access to this database, for a fee. They also attached stiff criminal penalties for anyone who abused that access. Gun dealers livelihood depends on this database, so they have a strong incentive not to abuse it. As far as I know, none of them have.
All criminal background checks are required, by law, to clear through these databases. They contain criminal records, mental health records, and personal information, including home addresses and telephone numbers. There is, at this time, no way to conduct a background check without giving the seller access to this database. If you are some type of computer genius that knows how to build a foolproof system for checking background without actually giving people the ability to check backgrounds feel free to describe it. Given the fact that you think a computer screen is magic, I doubt you are actually a computer genius.
Another point, California has often tried to close the gun show loophole, they have always run into trouble from privacy advocates from the left wing, mostly because the right wing is powerless in that state.