In the weeks since the shooting in Newtown, Conn., Gov. Martin O’Malley has repeatedly referred to gun violence as a “public health issue.” On Monday he announced a plan that would give Maryland one of the nation’s strictest gun laws, reports the Baltimore Sun. To own a handgun, residents would need to pass a training course and provide fingerprints to a police database, and Maryland would ban the sale of assault rifles and high-capacity magazines. How was the proposal received and how might this impact O’Malley’s prospects in a national election? Donald F. Norris, professor and chairman of UMBC’s Department …