WASHINGTON — Federal agencies are split on how best to handle national security concerns surrounding popular and ubiquitous Chinese-made drones, with some policymakers chafing at more protectionist approaches.

The Department of the Interior, which uses drones for tasks like wildlife conservation and the monitoring of the state of infrastructure, grounded all those made in China or built with Chinese parts in October. It reaffirmed that decision in January, saying its entire fleet of 810 drones would essentially remain out of commission until it can confirm they pose no security threat.

Yet the Department of Agriculture and the Office of Management and Budget raised warnings last year about congressional legislation that would make it impossible for the United States government to buy Chinese drones at all. The Agriculture Department, which uses drones to survey farmland, for example, said it could limit the ability “to carry out our mission-crucial work” and “halt” the Forest Service’s use of drones altogether.

The Trump administration has engaged in a steady campaign to wall off America from Chinese technology, saying the Chinese government could use it to spy on the United States. The administration has been trying to keep Huawei, the telecom equipment giant, out of the next generation of wireless networks both in the United States and abroad and has increased scrutiny of Chinese investment in sectors deemed “critical,” like telecom and tech. Federal officials have also investigated whether mobile apps owned by Chinese companies could leak sensitive data.