Confronting threats from China : assessing controls on technology and investment, and measures to combat opioid trafficking : hearing before the Committee on Banking, Housing, and Urban Affairs, United States Senate, One Hundred Sixteenth Congress, first session, on examining the aggressive role China plays in the areas of investment and technology transfer; the committee will also examine the production and export of powerful synthetic opioids and whether current U.S. laws in each of these areas are adequate, and being appropriately implemented and enforced to confront these threats, June 4, 2019