N. America Summit Shows Strains in Relations President Bush and the leaders of Mexico and Canada announce a new initiative promising cooperation in trade, security and energy and environmental issues. Yet past conflicts over defense, immigration and trade continue to strain North American relations.

N. America Summit Shows Strains in Relations

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N. America Summit Shows Strains in Relations

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N. America Summit Shows Strains in Relations

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March 24, 200512:00 AM ET

Heard on Morning Edition

David Greene

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President Bush and the leaders of Mexico and Canada announce a new initiative promising cooperation in trade, security and energy and environmental issues. Yet past conflicts over defense, immigration and trade continue to strain North American relations.