DEA Administrator Anne Milgram issued this warning during an Aug. 19 interview on "CBS Mornings." She cited two major drug cartels as the main driving forces behind the majority of fentanyl-related deaths in the United States.

"What we see happening at [the] DEA is essentially, there are two cartels in Mexico – the Sinaloa Cartel and the Jalisco New Generation Cartel (CJNG) – that are killing Americans with fentanyl at catastrophic and record rates like we have never seen before," she said.

"Those cartels are acting with calculated, deliberate treachery to get fentanyl to the U.S. and to get people to buy it – through fake pills, by hiding it in other drugs, any means that they can take in order to drive addiction and to make money."

"CBS Mornings" co-host Tony Dokoupil pointed to how drug dealing operations had changed in recent years. "[Before, dealers] wanted to keep a person addicted, keep them paying money, but not kill them," he said.

"The whole world of drugs has changed," Milgram interjected, laying down two key points to back up her claim,