A joint operation conducted by the Food and Drug Administration and Customs and Border Protection resulted in the seizure of nearly 2 million illegal electronic cigarettes, most of which came from China. 

The seizures occurred in Chicago in February but were announced by the FDA in a press release on Thursday. The devices taken in the joint operation were valued at $33.8 million. The initiative was part of an effort by federal agencies to prevent illegal e-cigarettes from being smuggled into the country.