https://www.theatlantic.com/politics/archive/2018/02/what-i-saw-treating-the-victims-from-parkland-should-change-the-debate-on-guns/553937/

The CDC is the appropriate agency to review the potential impact of banning AR-15 style rifles and high-capacity magazines on the incidence of mass shootings. The agency was effectively barred from studying gun violence as a public-health issue in 1996 by a statutory provision known as the Dickey amendment. This provision needs to be repealed so that the CDC can study this issue and make sensible gun-policy recommendations to Congress.

The Federal Assault Weapons Ban (AWB) of 1994 included language which prohibited semi-automatic rifles like the AR-15, and also large-capacity magazines with the ability to hold more than 10 rounds. The ban was allowed to expire after 10 years on September 13, 2004. The mass murders that followed the ban’s lapse make clear that it must be reinstated.

Civilian ownership of semi-automatic weapons needs to end.