In April 2025, the International Monetary Fund (IMF) darkened the economic outlook for the United States with a brutal revision: projected growth at 1.8%, down from the initially expected 2.7%. This turnaround, the most significant since the 2008 crisis, is not just a technical adjustment. It reflects a confluence of risks – trade wars, persistent inflation, a drop in consumption – that threatens to reshape the global economic balance. Behind these numbers, an unyielding observation: recent political decisions have triggered a shockwave whose aftershocks could last.