Witnesses Panel I: - Mr. David Balton, Deputy Assistant Secretary for Oceans and Fisheries, U.S. Department of State - Ms. Nancy Wallace, Director of Marine Debris Program, National Oceanic and Atmospheric Administration Panel II: - Dr. Melissa Duhaime, Assistant Professor, University of Michigan Hearing Details: Tuesday, July 25, 2017 10:00 a.m. Subcommittee on Oceans, Atmosphere, Fisheries, and Coast Guard