The DOI, which is responsible for maintaining federal land, uses a fleet of 810 drones to help in tasks such as monitoring floods and fires, inspecting dams and property, and tracking endangered species. At least 15% of the drones used by the DOI are manufactured entirely by Shenzhen-based DJI, the world’s largest supplier of drones, while the remainder are all made in China or contain China-made parts.

U.S. lawmakers have been lobbying government departments, to abandon Chinese made drones, fearing the UAVs could be sending data—such as images and geofence locations—to the Chinese government. In July, after resisting pressure to simply blockade Chinese tech, the DOI concluded a 15-month long review and announced it had developed strategies to ensuring drone data didn’t leak.

Last month, however, Senators introduced a new bill—the American Security Drone Act 2019—that would force all federal departments to stop using Chinese drones. Perhaps preemptively, Interior Secretary David Bernhardt announced Wednesday that all drones not currently being used for emergency measures‚ such as combating wildfires, would be grounded pending further review.

“Until this review is completed, the Secretary has directed that drones manufactured in China or made from Chinese components be grounded unless they are currently being utilized for emergency purposes, such as fighting wildfires, search and rescue, and dealing with natural disasters that may threaten life or property,” a DOI spokesperson said in a statement.

The DOI’s drone-grounding is the latest move from the U.S. government to push out Chinese tech. China telecoms manufacturer Huawei has faced a number of roadblocks in the U.S. including, most recently, being placed on the Department of Commerce’s “entity” list, which prevents U.S. companies from selling to the Chinese phone maker.

Early this month, the White House placed 28 more Chinese companies on the blacklist, including China’s most promising A.I. firms, Sensetime and Megvii. The U.S. government’s apparent vendetta against Chinese tech has intensified as the trade war—a key complaint of which is China’s use of “forced technology transfers” to gain expertise—drags on.

Responding to news of the DOI’s no-fly policy, China Foreign Ministry spokesperson Geng Shuang urged Washington to  “stop abusing the concept of national security” and provide a non-discriminatory atmosphere for Chinese companies.

Meanwhile DJI said it was “disappointed” by the development but would “continue to support the Department of Interior and provide any assistance we can as it reviews its drone fleet and so the agency can quickly resume the use of its drones to help federal workers conduct vital operations.”

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