German Chancellor Angela Merkel, left, and President Bush, talk in the market place in the north German town of Stralsund, in this July 13, 2006, file photo, as Bush stopped there to talk with his newest European ally before heading to the Group of Eight summit. Merkel arrives in Washington Sunday, April 29, 2007, and will meet with Bush Monday at the White House in an effort to bridge differences on major issues like global trade and climate change. (AP Photo/Peter Kneffel, Pool, File)