New Regulations to be Published in Federal Register WASHINGTON — To combat a wide variety of tactics smugglers use to conceal fentanyl and other synthetic opioids, Homeland Security Secretary Alejandro Mayorkas signed an Interim Final Rule (IFR) to promulgate regulations that will enable U.S. Customs and Border Protection (CBP) to implement provisions required in the Synthetics Trafficking and Overdose Prevention (STOP) Act. These regulations will strengthen the collection and sharing of advance electronic data (AED) by the United States Postal Service (USPS) and CBP for international mail shipments. “The STOP Act is an important step in the battle against the deadly scourge of synthetic drugs that has caused so much loss and pain in our country,” said Secretary Mayorkas. “The Department of Homeland Security is proud to implement the STOP Act through this regulation. Since taking office last month, working closely with U.S. Senators Rob Portman and Gary Peters, I have prioritized the promulgation of today’s regulation.”