Yes. And so is nationwide. I mean, then the excuse will be “well the guns are coming from over the borders”.
Gun control simply doesnt work- it can’t work to reduce mass killings. It could, maybe reduce violent crime a bit.
Mass killings here in the USA aren’t caused by guns- we have had lots of guns since 1776. They are caused by the media glorifying the killers. Noted sociologists have done many studies (which I have linked to previously) that show it’s the media that is pushing the recent increase in mass shootings.