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Carlos Gomez y Gomez, president of the Mexican Bankers Assn., said Mexico should consider stabilizing its currency through a monetary union with the U.S.--a move that could make the dollar the national currency. Gomez y Gomez said the peso’s current free-floating foreign-exchange regime has been very useful but that monetary union would provide further stability. The peso traded at 10.18 to the dollar Wednesday. Last week, Argentina said it was mulling making its economy dollar-based.