The world's first gun made almost entirely on a 3D printer has been fired in the United States. Cody Wilson, a Texas law student, has been working on the project for over a year.

This weekend, Texas Motor Speedway will host a NASCAR race — and the name of the race is causing a bit of controversy. It's called the NRA 500, as in National Rifle Association.

The NRA reveals its plans to protect schools from shooters like Adam Lanza. What are the plans? And who bears the costs?

Even with a federal license, Cody Wilson, the law school student who wants to use 3D printing to manufacture firearms, remains wary the government will shut him down.

Elected officials in Connecticut want Facebook to take Sandy Hook conspiracy theorist pages down; Facebook says no — but points out that it has been dealing with the issue and is in constant contact with families affected by the tragedy.

Mayors Against Illegal Guns has 800 members. They want gun laws that restrict the flow of illegal guns to criminals.

The Bureau of Alcohol, Tobacco and Firearms hasn't had a permanent director in six years. President Obama called for confirmation of his nominee as part of his gun-safety proposals.

Democratic Senator Richard Blumenthal of Connecticut joins us to talk about his new proposal to curb gun violence — background checks for the sale of bullets.

Vice President Joe Biden included Walmart in his invites to an industry meeting on gun safety. Why? Walmart is one of the biggest seller of guns in the U.S. Just like it's the biggest seller of men's underwear, dog food and many other things.