"It's an opportunity for Mexico to go after the cartels," said Ray Donovan, the former DEA chief of operations.

Chinese chemical company execs Wang and Chen were convicted of fentanyl precursor importation and money laundering.

A Jan. 30 traffic stop led to an undercover drug investigation that resulted in the seizure of over two pounds of fentanyl ...

Here's what we know so far about ICE enforcement operations in the wake of several immigration-related executive orders Trump ...