Bryan Mawr professor tells Senate Neutrality Group Thomas Act needs amendments. Washington, D.C., April 17. Charles G. Fenwick, Professor of International Law at Bryn Mawr College, told the Senate Foreign Relations Committee that the Thomas Neutrality Act should be amended to allow either Congress or the president to select aggressor nations and apply sanctions. As the act now stands, he said, 'No distinction is made between nations that violate treaties they have made with us and those that observe them.' He urged that the United States 'let it be known' that the U.S. will be on the side of those who observe international laws