1. Make it illegal to own firearms and magazines holding more than 10 bullets. Sen. Frank Lautenberg proposed this law after the Gabby Giffords shooting in 2011. If Adam Lanza had guns holding 10 bullets or fewer, "a significant number of those 20 Newtown first graders would almost certainly be alive," writes the Atlantic's Robert Wright.
2. Regulate or ban assault weapons. Democratic Sen. Diane Feinstein promised to reintroduce the assault weapons ban, which expired in 2004. But critics say banning assault weapons is a red herring, since Adam Lanza's primary weapon, the Bushmaster .223 rifle, would have been legal under the ban.
3. Ban assault weapons AND magazines with over 10 bullets. Feinstein's promised legislation would not only nix assault weapons, but also ban "big clips, drums and strips of more than 10 bullets," Yahoo reports.
4. End gun-free zones in schools. On Sunday Rep. Louie Gohmert said teachers should have access to guns to deter attackers and defend kids if an attack takes place. He told Meet the Press that he wished Sandy Hook's principal had access to an assault rifle.
5. Nothing. No law would have prevented the shooting in Newtown, writes the Atlantic's Megan McArdle. We already have laws banning the mentally ill from accessing guns; they didn't stop Lanza from using his mom's. And banning high-capacity magazines is a non-starter when it takes just seconds to change magazines.
Posted 6am PST.