Shenzhen-based DJI has the lion’s share of the global drone market and is the dominant player in the U.S. market.

A broader ban is worrisome for Americans for whom drones have become a part of their lives and work. It could disrupt wide-ranging operations, from law enforcement to mapping and filmmaking that drone operators say are viable because of the low cost and high performance of the Chinese drones. American-made drones just aren’t comparable, they say.