In fact, the United States Customs Service reports that CFC-12 is a contraband problem second only to illicit drugs.

事实上，美国海关报告说，CFC-12 是仅次于违禁药物的第二大违禁品。

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We track important developments in homeland security policies and programs in the United States National Guard, the Federal Emergency Management Agency, the United States Coast Guard, U.S. Customs and Border Protection, U.S. Immigration and Customs Enforcement, United States Citizenship and Immigration Services, the United States Secret Service, the Transportation Security Administration, and Civil Air Patrol.

CENTERFORSECURITYPOLICY: Homeland Security

The drug began appearing in the United States in the early 1990s, testified John Varrone of the U.S. Customs Service.

CNN: Senate panel probes so-called 'hug drug'