month since the deadly attack atsandy hook elementary school. Six teachers among the victims there and so teachers like these folks in sarasota, florida, are going to class to learn how to defend... See More
month since the deadly attack atsandy hook elementary school. Six teachers among the victims there and so teachers like these folks in sarasota, florida, are going to class to learn how to defend themselves and their students if a gunman should come to their school. The rush to get weapons training and here's abc's david kerley at the white house. Reporter: It was a weekend run on guns. Long lines at gun shows, even a protest at one in new york. And word outside of atlanta that some police departments are having a hard time getting ammunition because the public is buying so much. There's been more demand for ammunition than there's ever been. Gun safety advocates -- Reporter: Along with more funding for mental health care vice president joe biden is also expected to recommend significant gun control measures, universal background checks and limiting how many clips a magazine clip can hold and an assault weapons ban. At last the waiting ends. Reporter: Bill clinton got a ten-year assault weapons ban by two votes, but this is a much more conservative congress. A recent poll shows a slim majority of americans oppose such a ban, and the nra is ready for battle. The likelihood is that they're not going to be able to get an assault weapons ban through this congress. Reporter: Even a democratic senator says it won't happen. Assault weapons stand -- on just guns alone will not in the political reality that we have will not go anywhere. Reporter: But other provisions may have a chance according to experts. Why do hunters need a clip that carries more than ten rounds and why shouldn't gun buyers at gun shows be required to have their background checked? Congress surely can act and should act to close that loophole and to make more uniform the background check process across all the 50 states. Reporter: Rather than pass laws, one lawmaker is appealing directly to retailers. When a mainstream store like walmart says we're not going to do it, it will make people think twice. Reporter: Schumer is hoping these big box stores will not sell assault
This transcript has been automatically generated and may not be 100% accurate.