NEW YORK (Standard&Poor's CreditWire) March 13, 2000--Standard&Poor's today raised its rating on the United Mexican States' long-term sovereign credit and senior unsecured foreign currency debt to double-'B'-plus from double-'B'. Additionally, Standard&Poor's affirmed its triple-'B'-plus/'A-2' ratings on Mexico's long- and short-term local currency debt, and also affirmed its single-'B' short-term foreign currency rating. The outlook on the foreign currency ratings remains positive. The outlook on the local currency ratings is revised to positive from stable. The upgrade reflects Standard&Poor's expectation that prudent macroeconomic policies will be maintained in the next administration by either of the two leading candidates in the presidential race. The current macroeconomic mix—characterized by cautious fiscal and monetary policies, a