Many in Congress have ambitious agendas for the current lame duck session — fund the government, raise the debt ceiling, and legislate the right to marry — but one vital step Congress absolutely must take is to protect the public against threats from Unmanned Aerial Systems, popularly known as drones. The legal authorities of Departments of Justice (DOJ) and Homeland Security (DHS) to protect the public from drone threats at airports and events like the Super Bowl expire on Dec. 9. Congress and the administration need to agree quickly to one of several competing legislative alternatives, or else agree to...