"Which countries are likely to benefit from dollarization? The most obvious are those already highly integrated with the United States in trade and financial relations. Yet most countries in Latin America are quite different from the United States in their economic structure and would probably not benefit greatly from dollarization unless accompanied by deep market integration, as in the European Union."
In case there is a run in the banks who is going to supply US dollars?
Note. Some countries have opted for a currency board. "A currency board is an extreme form of a pegged exchange rate. Management of the exchange rate and the money supply are taken away from the nation's central bank, if it has one. In addition to a fixed exchange rate, a currency board is also generally required to maintain reserves of the underlying foreign currency."
