You want laws that would be effective against gun violence?
-Carrying an illegally concealed weapon during the commission of a crime or using a firearm in the comission of a crime adds 30 years to your sentence.
-Illegally carrying a firearm while on probation or as a prohibited felon carries a ten year sentence.
The problem? Lots of minorities going to jail for a really long time. But if you want to save lots of lives really quickly, that's the way to do it.
Personally, I like the trend we have of violent crime going down. I'd like to see us focus on making the hell-holes of our country more livable and less prone to driving people to crime and anger and fighting. And throw in legalization of things that don't need to be crime and reduction of sentences on non-violent crime so that those criminals don't resort to violence to avoid jail. Add in a dose of mental health care and better drug rehabilitation access.