The Key TBML Countermeasure - Can you guess what it is?

Yesterday I was honored with an invitation to address Congressman Robert Pittenger's international Parliamentary and Security Forum.    My remarks focused on the key or the most important countermeasure to successfully combat trade-based money laundering  (TBML).  The link is below.   I  speak for about 11 minutes and my remarks begin around the 34:30 mark.   The Forums, both live and via Zoom, are primarily for international parliamentarians and policy makers.   They concentrate on various security issues.   The sessions are well done and very informative.
  pittenger.zoom.us/rec/play/tEsBjbxeyUGrjl-G94kSTO2cO8O3TvuRg9OQ8QrMZ8FtcDpes5L58KhOx7UUDgPD4PVk8gzt7KI4PGVb.AZ07IJxGbaaOIezj?startTime=1623160345000&_x_zm_rtaid=rkR8kj8hS22EX3MUQcLlHw.1623236847919.2c3f7d6b691d5b77876157df8a9c6075&_x_zm_rhtaid=116