Fifty-six scanning systems that can detect fentanyl in personal vehicles at southern U.S. border crossings will now be installed because of $200 million in new funding that was approved by Congress after NBC News reported the scanners were sitting unused in warehouses.

Ninety-five percent of the fentanyl U.S. law enforcement seizes is discovered in personal vehicles driven across the border by U.S. citizens, according to Department of Homeland Security officials, and the scanners are the strongest tool the Biden administration has to detect fentanyl in vehicles.