Unfortunately, lacking evidence doesn't stop the gun-grabbers. 

Via the Hill: 

Gun control advocates seem willing to latch onto anything they can use to justify more stringent laws. They were at it again in the wake of the recent Santa Fe High School shooting. In the New York Times last Thursday, Nicholas Kristof pushed for 10 supposedly “modest” gun control measures.

Everyone wants to do something to stop mass public shootings. And Kristof is right that fewer school doors aren’t the solution. Schools have as many entrances as they do for a reason (such as escaping fires). One door with a metal detector doesn’t mean much if the guard is the first person killed, and lining up a large number of students at one entrance creates an attractive target for killers to attack there.

But we also have to be careful that the gun control laws primarily disarm criminals, not law-abiding citizens. There has to be reasonable evidence that the regulations reduce crime. Let’s take a look at these proposals.

Universal background checks

Two points supposedly support background checks on private transfers of guns. A survey showing that 22 percent of U.S. guns obtained in the last two years were acquired without a background check. But this is mainly a result of inheritances (presumably, mainly within families) and, to a lesser extent, gifts. No evidence is provided that guns acquired through inheritance are commonly used in crime. The survey claims that 16 percent of people bought a gun at a store without undergoing a background check, but this is illegal everywhere in the U.S. It is not a credible claim...

Closing the Charleston Loophole

The shooter who killed nine people at the Charleston, South Carolina church in 2015 was supposedly only able to buy a gun because his background check wasn’t completed within three days. But giving the government more time to complete the background check wouldn’t have made any difference. The killer had been charged recently with illegal drug possession, but never convicted. Being charged with a felony that could result in a prison term of at least two years makes a person ineligible to buy a gun. Yet, the killer was arrested for a misdemeanor drug possession, not a felony, so he faced a maximum prison time of six months...

Red flag laws

This law would allow people’s guns to be taken away without even the hearing before a judge, something that most states currently require. When people “really” pose a clear danger to themselves or others, they should be confined to a mental health facility. Denying them the right to legally buy a gun isn't a serious response. People can get guns in other ways, and just about as easily as they can buy illegal drugs. And if someone is really a danger, why only take away their guns? Why not also take away other items that can be used as weapons, such as their cars?

Read more here.