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Canada's Prime Minster, Stephen Harper (left), The Greatest President Ever (center) and Mexico's President, Felipe Calderon (right) wield gold-plated shovels to plant a tree, New Orleans, Louisiana, 22 April, 2008.

REUTERS/Larry Downing (UNITED STATES), Copyright © 2008 Reuters Limited. All rights reserved. Copyright © 2008 Yahoo! Inc. All rights reserved.