Last month, a bipartisan group of five U.S. Senators held a roundtable forum at the U.S. Capitol to discuss the biggest threat to public safety most Americans have never heard of. The Senators questioned a panel of government experts, including representatives of the U.S. Postal Service, Customs and Border Protection; Drug Enforcement Agency; and Department of State, who acknowledged the crisis. Each emphasized its causes as systemic, making any fast solution unlikely.