Amber Hill Holdings Limited invited Dr. Wu to provide an in-depth analysis of the development of the US tariff wars, from Smoot-Hawley Tariff Act, to the Tariff Act of 1930, to the current Trump tariff war. The driving force originated from American national protectionsim or Fortress America, but the enduring and hidden force is the American neoconservative movement. In addition, Dr. Wu will introduce Neocon, which is the marginal ideological movement that dominates today.