The Department of Homeland Security warned cartels their drones are failing as 378 were detected at the southern border in just over one month.
https://www.foxnews.com/politics/dhs-issues-stark-warning-300-hostile-cartel-drones-detected-southern-border
https://www.foxnews.com/politics/dhs-issues-stark-warning-300-hostile-cartel-drones-detected-southern-border