The unimaginable horror of Sandy Hook jumpstarts another "national conversation" about firearm violence. President Barack Obama, promising "meaningful action," said: "We will have to change. ... We can't tolerate this anymore. These tragedies must end."
Let's examine four of the "commonsense" measures frequently proposed by "gun control advocates":
One, closing the "gun show loophole." What gun show loophole? Restricted from selling at guns shows prior to 1986, a licensed dealer today requires a background check whether he sells guns at a store, a gun show or the back of his SUV.
Two, banning "high-capacity" magazines. One of...