Democrats have been clamoring for gun control legislation, saying it will cut down on the number of mass shootings in the US. For that reason, President Joe Biden says he wants a national ban on assault weapons. This might sound logical on its face—remove the weapons that make mass shootings so deadly and cut down on the number of deaths—but there are a few problems with this idea. In this episode of America Uncovered, we look at the controversy surrounding what an "assault" weapon is, what studies say about what an assault weapon ban would do, and the definition of a "mass shooting."