Well, our illustrious president has put his finger on the problem.
The solution is simple: just increase suspensions and expulsions of minority students. Betsy (The Wetsy behind the ears) DeVos will lead a commission to repeal Obama's "Rethink School Discipline" policies.
This only makes sense in Trump's demented brain. Cruz, the Parkland shooter was white. He had been suspended and expelled. There has never been a black school shooter. But lax discipline might allow a minority who might be a potential shooter slip through the cracks.
See? No need to tackle the NRA. Not that he's afraid of the NRA. They just made so much sense during that private dinner, whatever they said.