New Policy Will Ensure U.S. Security Assistance is Used in Accordance with International Humanitarian Law WASHINGTON, D.C. - Senator Peter Welch (D-Vt.) today joined Senators Chris Van Hollen (D-Md.), Dick Durbin (D-Ill.), Tim Kaine (D-Va.), Elizabeth Warren (D-Mass.), Jeff Merkley (D-Ore.), Mazie Hirono (D-Hawaii), Tina…