National Defense Authorization Act passed without an amendment effectively banning the China-made drones, but left a door open for a prohibition in 12 months.

DJI and Autel Robotics have one year to convince skeptical national security agencies that their equipment doesn't pose a threat to the U.S.

About 80 percent of all drones sold in the U.S. are made by a Chinese company, DJI, that the U.S. government says has links to the Communist Party. Congress is on the verge of banning all Chinese-made drones from the U.