In the wake of last weekÂ’s tragic shooting at a Florida high school, the national narrative has centered on guns. Democrats mostly argue for increased gun control measures, while Second Amendment advocates mostly oppose any new restrictions. The debate usually dies quickly after a shooting, but it has remained strong over the last week. Now, even President Donald Trump is reportedly considering new restrictions on firearms. No. 1: Raising the purchase age for certain firearms Axios reported Wednesday that Trump has privately discussed supporting a measure that would raise the purchase age for semi-automatic rifles from 18 to 21. Currently,...