"This madman passed a background check. He was able to pass a background check because we have a system that's flawed," Loesch said on stage. The Brady Act, passed in 1993, established the federal system that screens firearm purchases at licensed dealers. While the FBI built its high-tech NICS system, local police were tasked with conducting the background checks. However, the NRA teamed up with local sheriffs in Montana and Arizona to challenge the law, saying local law enforcement shouldn't be forced to work for the feds.

Source: CNN February 24, 2018 01:24 UTC