What Happened
Mexico joined NAFTA in January 1994 and was celebrated as a successful developing economy — the first Latin American country accepted into the OECD. The peso was pegged to the dollar within a band. The current account deficit was large but financed by capital inflows that were attracted by NAFTA euphoria and high peso interest rates.
Multiple shocks in 1994 — the Zapatista uprising, the assassination of presidential candidate Luis Donaldo Colosio, and political uncertainty — triggered capital flight. Mexico’s reserves fell from $25B to $6B by December. On December 20 the government widened the peg band. The market interpreted this as the first step to devaluation and accelerated capital flight. On December 22 the peg was abandoned.
The Clinton administration organized a $50B rescue package from the US Exchange Stabilization Fund and IMF within weeks — the largest EM bailout to that point. Mexico recovered by 1996. The "tequila effect" spread the crisis to Argentina and Brazil but was ultimately contained. The episode created the template for modern EM crisis management.
The Mechanism
Hot money financing and the sudden stopMexico’s current account deficit was financed by short-term portfolio capital flows attracted by high peso interest rates and NAFTA optimism. This capital is reversible overnight. When political shocks reduced confidence, capital left and the government had to use reserves to defend the peg. Once reserves are visibly depleting, speculative attack becomes rational — the peg must break, so you short it now and collect the profit when it does. The sudden stop of capital flows is the defining EM crisis mechanism.
What the Consensus Believed
The prevailing view before the reckoning
Mexico had graduated to first-world status. NAFTA membership guaranteed continued capital inflows. The peso band was credible and defensible. Current account deficits financed by FDI-like flows were sustainable.
What the Record Shows
Reserve buffers are the first line of defense
After the tequila crisis, every EM central bank began building reserve buffers. By 2008 EM reserves exceeded $6 trillion. The lesson was direct and institutional.
Current account deficits financed by hot money are inherently fragile
NAFTA did not change the fundamental: Mexico was borrowing short to invest long. When sentiment changed, the financing disappeared.
Act fast and act big
The Clinton rescue was controversial but worked. IMF programs without sufficient firepower (as in Greece 2010) do not restore confidence. Size matters in crisis management.
Contagion is global
The tequila effect hit Argentina and Brazil within weeks. EM investors did not distinguish between Mexico’s specific problems and other EM exposures. Risk-off selling hits all EMs simultaneously.
↑ Cognitive pattern: Anchoring — NAFTA optimism preventing assessment of structural vulnerabilities
Key Voices
Called It Right
Robert Rubin
US Treasury
“The US must support Mexico. A Mexican collapse would be catastrophic for US banks and the NAFTA project. Act fast and act big.”
December 1994 Right — rescue worked
Various skeptics
EM analysts
“The current account deficit is dangerously large. Mexico is accumulating dollar liabilities it cannot service if capital flows reverse.”
September 1994 Right
Wrong
Mexican officials
Finance Ministry
“Mexico has been accepted into the first world. The peso is a strong currency with fundamental support.”
June 1994 Devalued December 1994
Clinton administration
Initially
“NAFTA will transform Mexico into a modern economy. Investment flows will stabilize the peso permanently.”
January 1994 Crisis 11 months later