This essay explores tools available to the U.S. government for restructuring the international trade and financial system, with emphasis on tariffs and currency policy.
This essay explores tools available to the U.S. government for restructuring the international trade and financial system, with emphasis on tariffs and currency policy.

Global trade is once again at the center of financial market debates. With new tariffs emerging and supply chains being reconfigured, investors are navigating an environment that looks less like the free-trade consensus of the past three decades and more like a fragmented, competitive system. This “Tiffin Dilemma” — the tension between dollar dominance and rising trade blocs — is shaping both policy and portfolio outcomes.
The imposition of tariffs is no longer just an economic lever; it has become a strategic tool. The U.S. has used tariffs to pressure China, while Europe considers industrial policy subsidies to defend domestic manufacturing. At the same time, emerging economies are strengthening trade ties outside of U.S.-dominated frameworks, hinting at a slow but persistent erosion of the dollar’s centrality in global commerce.
For investors, the dilemma is clear: the U.S. dollar remains the world’s reserve currency, but the architecture of trade is fragmenting into competing regional systems.
The Tiffin Dilemma underscores the paradox of today’s markets: the dollar remains dominant, yet the incentives to build alternatives are growing. Tariffs accelerate this process by incentivizing nations to diversify supply chains, currencies, and trading partners. For investors, this is not just about protectionism in the short term — it’s about recognizing the gradual reordering of global trade and the investment shifts it will bring over the coming decade.