An intelligent legal/prison/parole system would help prevent shootings and crimes involving handguns by putting the people who like to do it in prison for long periods of time. Regardless of their race or ethnicity.
This conservative most definitely wants tougher border measures. The problem is they won't have much impact unless someone works up the courage to tackle the wide open gates that are cross-border native reserves. That leaves detective work to identity those who bring guns over and sell them and then hammer those people with long periods of prison time.
That won't work, either as long as we have bleeding heart judges who prefer to give them a gentle slap on the wrist or a stern talking-to. Really, what we need to do is put in place mandatory minimums for smuggling, selling, and especially use of illegal use of firearms and use the notwithstanding clause to keep the judiciary from striking them down.