Currency Undervaluation Investigation Act

Amends the Tariff Act of 1930 to require the administering authority, upon the filing of a petition by an interested party, to initiate a countervailing duty investigation or review to determine whether currency undervaluation by the government of, or any public entity within, a foreign country is providing, directly or indirectly, a countervailable subsidy to its exporters or products.

Declares that the fact that such a subsidy is also provided in circumstances not involving export shall not, for that reason alone, mean it cannot be considered export contingent and actionable under a countervailing duty and antidumping duty proceeding.

Declares that the amendments made by this Act shall apply to goods from Canada and Mexico.