Mexico’s stock-market performance is likely to keep falling short of its regional rivals if the Calderon government fails to widen the country’s tax base, triggering a downgrade of its current credit rating.

Mexico’s currency eases, moving off earlier advances made after legislators decided to accept a permanent sales-tax increase, and after the release of upbeat economic data from the U.S., Mexico’s largest trading partner.

Mexican equities drop sharply, with shares of market heavyweight America Movil SAB sliding in the wake of the wireless services giant’s quarterly results, while a broad-based sell-off hit Brazil’s benchmark.

Brazilian and Mexican equities continue their run of advances by hitting highs not reached since mid-2008 as commodity and industrial stocks strengthen.

Brazilian and Mexican equities fall Tuesday, as broad-based losses yank Latin Americaâ??s biggest benchmarks from their highest levels so far this year.

NOTE TO EDITORS: The Following Is an Investment Opinion Being Issued by WallStSense.com

NOTE TO EDITORS: The Following Is an Investment Opinion Being Issued by Ridgewater Equity (RWE).

NOTE TO EDITORS: The Following Is an Investment Opinion Being Issued by AnalystChoice.com (AC).

NOTE TO EDITORS: The Following Is an Investment Opinion Being Issued by WallStSense.com

NOTE TO EDITORS: The Following Is an Investment Opinion Being Issued by RothmanResearch.com.