President Joe Biden said that more gun laws should be passed in Congress after a shooting in Sacramento left at least six people dead and more injured over the weekend. In response to the shooting, Biden said that Congress needs to “ban ghost guns,” although there is no evidence that a “ghost gun”—an unserialized and untraceable firearm that can be assembled after purchasing components online—was used during the Sacramento incident. “Require background checks for all gun sales. Ban assault weapons and high-capacity magazines,” he also said, without elaborating on what he means by an assault weapon or high-capacity magazine. Gun control proponents and some officials have suggested a high-capacity magazine is one that holds 10 rounds or more, but others have suggested a magazine with seven rounds or more should be considered high-capacity. Meanwhile, pro-Second Amendment groups have long said the term assault weapon is intentionally misleading or vague, while …