30 Mar. 2006
Chichen Itza, Mexico
(L-R) Mexican President Vicente Fox, U.S. President George Bush and Canadian Prime Minister Stephen Harper gather on the steps of the Castle, or Kukulkan Pyramid, at the Mayan ruins of Chichen Itza in Mexico's Yucatan Peninsula March 30, 2006. Bush, Fox and Harper are in Cancun to discuss [security and immigration issues at the three-way summit of North American leaders].