Prime Minister Stephen Harper has signalled that he doesn't see Potash Corp. of Saskatchewan (POT-N142.43-1.00-0.70%) as a national corporate champion in need of protection from a foreign takeover, saying it's already American controlled.

As Saskatchewan's Premier and opposition critics demanded Ottawa act to protect Canada's resource sector from further foreign domination, Mr. Harper told the House of Commons on Wednesday the fight for Potash Corp. is over "a proposal for an American-controlled company to be taken over by an Australian-controlled company."

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