Idrees Kahloon: “Even as he insisted that U.S. global dominance will last forever, Trump is busily dismantling the very economic underpinnings that would ensure future American might.”“When economies lag, hegemony becomes unsustainable. Britain’s decline took only a few short decades. The Soviet Union rivaled America militarily but could not keep up economically, and unraveled as a result of its inability to grow. Americans today enjoy material abundance scarcely imaginable in Kipling’s day.”“That is the reaped reward of scientific prowess, high-skilled immigration, the rule of law, free trade, and stable monetary policy—all of which Trump is jeopardizing in his current term.”