According to sources familiar with the program, the Interior Department has a fleet of 810 drones, almost all built by Chinese companies.
Only 24 are US-made and even those have Chinese electronic components, the sources said.
The US Department of Homeland Security issued a warning in May that Chinese-made drones could pose a security risk.
The United States has also taken steps against China’s Huawei by effectively banning American companies from selling or transferring US technology to the Chinese telecoms giant.
US intelligence believes Huawei is backed by the Chinese military and that its equipment could provide Beijing’s spy agencies with a backdoor into the communications networks of other countries.
The Chinese company DJI produces about 70 percent of the world’s commercial drones.
The Pentagon has banned the military from using DJI drones for security reasons since 2017.