WASHINGTON -- Millions of reports on people barred by federal law from purchasing guns because of serious mental illness and drug abuse are never added to the federal background check system, according to a study set to be released Tuesday. The report, by Mayors Against Illegal Guns and entitled "Fatal Gaps: How Missing Records In The Federal Background Check System Put Guns In The Hands Of Killers," was sparked by last January's assassination attempt on Rep. Gabby... (GunPolicy.org)