Several Democratic members of Congress have proposed firearm legislation that would ban the sale, transfer, possession, manufacture, or importation of magazines that can hold more than 10 rounds. Several states including New York and California have previously imposed bans on magazines that hold more than 10 rounds. Magazines that held more than 10 rounds were banned under the Federal Assault Weapons Ban of 1994, which expired in 2004. On April 14, Sen. Bob Menendez (D-N.J.) as well as Reps. Diana DeGette (D-Colo.), Dina Titus (D-Nev.), and Ted Deutch (D-Fla.) introduced the measure (pdf), known as the “Keep Americans Safe Act.” The Department of Justice has previously said that the 1994 federal ban on so-called high-capacity magazines didn’t lead to a significant drop in shootings and murders. That study has been often cited by gun-rights groups including the National Rifle Association (NRA) and Gun Owners of America for why such legislation would be ineffective. “We …