It's not just terrorists who use assault weapons

To the editor:

Congress (with the NRA's blessing) should update and re-enact the federal assault weapons ban, officially, the Public Safety and Recreational Firearms Use Protection Act.

Background checks are no solution for gun purchases. All mass murderers are not terrorists. Guns used in 16 recent mass shootings were bought legally and with a federal background check. At least eight gunmen had criminal histories or documented mental health problems that did not prevent them from obtaining their weapons. Omar Mateen, the man with the assault rifle in the Orlando mass killing, had documented behavior problems — 31 in third grade.

Nancy F. Nirenberg, Lenox