US Imports by Country and Goods

t_F,c = reciprocal rate × t_US,c; size share_c = expenditure_c / total expenditure; size-adjusted foreign tariff = size share_c × t_F,c; ln(P_world,c) = −0.5 × (t_US,c + size-adjusted t_F,c) + 0.5 × min(t_US,c, size-adjusted t_F,c). Modeled imports_c,h = baseline imports_c × P_world,c × (1 + t_US,c)^elasticity_h × (1 + t_F,c)^elasticity_h, where h is short-run or long-run. Foreign tariffs now directly reduce demand as well as affecting world prices. Separate price indexes, modeled imports, revenues, and Laffer curves are shown for both horizons. Biden-era / COVID uses the General Rate column from Covid_Biden.csv; the announced-rates option uses the Liberation Day file's Column 2 Rate of Duty values as the proposed high-rate scenario.