Yawn. You may trust govt to define "mentally ill" but we don't. Also you erect a strawman with the AR15 either from ignorance or intent. A scary looking long rifle suddenly becomes every single long rifle plus mental illness suddenly becomes anyone registered (R).BS. Nobody thinks it's cool to shoot political candidates. Name one mainstream Democrat personality that said what happened to Trump was OK. Seems I remember Donald Jr joking about Paul Pelosi being beat with a hammer in an attempt to kidnap his wife though.
The Dems would love to limit access for the mentally ill to have AR15s but the Pubs won't let it happen.
Until you proven liars try to be honest....we cannot trust change as you define it.