Jamieson Greer advocated restructuring the international trading system and defended the president’s aggressive actions against Canada and Mexico as he testified before the Senate. United States Politics and Government, International Trade and World Market, Protectionism (Trade), Politics and Government, United States International Relations, Agriculture and Farming, Small Business, Greer, Jamieson L Jamieson Greer advocated restructuring the international trading system and defended the president’s aggressive actions against Canada and Mexico as he testified before the Senate. NYT > Business