II 116th CONGRESS 1st Session S. 2323 IN THE SENATE OF THE UNITED STATES July 30, 2019 Mr. Markey introduced the following bill; which was read twice and referred to the Committee on Homeland Security and Governmental Affairs A BILL To require the screening of 100 percent of international mail and express cargo inbound into the United States from high-risk countries to detect and prevent the importation of illicit fentanyl and other illicit synthetic opioids, and for other purposes.