The federal agency responsible for maintaining America’s vast federal lands, is halting the use of non-essential Chinese-made drones, following pressure from members of Congress.

The Department of Interior had previously resisted making this move in recent months. In July, it announced that it had completed a 15-month review of its drone program. That review recommended strategies for making sure data didn’t leak, but allowed for the continued use of DJI drones.  

In a reversal Wednesday, the department said in a statement to Bloomberg News that it would stop flying non-essential Chinese drones pending a review of the program. The agency said in a statement that “drones manufactured in China or made from Chinese components” would be “grounded” except for “emergency purposes, such as fighting wildfires, search and rescue, and dealing with natural disasters that may threaten life or priority.” There is Chinese hardware in all of the department’s drones. It didn’t cite a specific reason for the change. 

The move comes amid a trade war between China and the U.S. and as members of Congress grow increasingly concerned about American reliance on Chinese technology – whether that means drones made by DJI, or networking equipment made by Huawei. 

It’s unclear whether the partial halt will satisfy a bipartisan group of Senators who in September introduced legislation to force the department to stop using Chinese-made drones.  The primary sponsors were Florida Senator Rick Scott, a Republican, and Chris Murphy, a Democrat from Connecticut. “Following many conversations between my office and the Interior Department, I’m glad to see the Department has seen the light and reversed course,” said Scott in a statement. “We should not, under any circumstances, put American national security at risk by using taxpayer dollars to purchase Chinese tech.”