Lawmakers on Capitol Hill have tried banning certain guns before. Nearly two decades ago, they barred the sale of semiautomatic assault weapons, only to let that law lapse 10 years later. But one gun ban has stayed on the books: a measure Congress passed a quarter-century ago making it illegal for civilians to buy or sell any machine gun made from that date forward. That legislation passed with the blessing of the National Rifle Association, which now opposes gun control measures.
In April 1986, after months of efforts, the NRA had finally rallied enough support in the Democratic-controlled House to force a bill onto the floor. The so-called Firearms Owners' Protection Act would undo many of the provisions in the 1968 Gun Control Act, passed shortly after Robert Kennedy and Martin Luther King were shot dead.
But just as the bill was about to come to a final vote in that tumultuous House session, New Jersey Democrat William Hughes introduced an amendment. It would forbid the sale to civilians of all machine guns made after the law took effect.
There were enough Democrats to pass the amendment, so nobody objected when the presiding officer, New York Democrat Charles Rangel, called for a voice vote rather than a roll call vote on the machine gun ban.
Former NRA lobbyist Richard Feldman, who has since parted ways with the organization, tells NPR that Wayne LaPierre, currently NRA's executive vice president, was willing to let the machine gun ban go forward if it meant the larger bill it was attached to would pass.
Gun laws expert Robert Spitzer of the State University of New York at Cortland says the bill President Reagan signed into law was more significant than it was perceived at the time.
"One can view the Congress' action in 1986 to ban civilian possession of fully automatic weapons as something of a kind of a precedent that would open the door for restricting civilian access to semiautomatic, assault-style weapons," Spitzer says.
Spitzer says a major reason the machine gun ban met so little resistance was a 1934 law passed a month after outlaws Bonnie Parker and Clyde Barrow were killed in a hail of machine gun bullets. It required machine gun owners to pay a hefty tax, be fingerprinted and be listed on a national registry.
As a result, he says, sales of machine guns plummeted.
"It is a good example of something that is little known, which is a gun control law that was pretty effective in keeping such weapons out of civilian hands," he says. "So by 1986, when the provision was added to the Firearm Owners' Protection Act to bar any newly produced fully automatic weapon from possession by civilians, it was really a fairly small step to make, because so few of them were in circulation to begin with."
That's clearly not the case with the semiautomatic guns that polls show a majority wants banned today.