Yes the dollar will crash
It is going to be replaced by the "'Amero" which will be a single currency covering the entire hemisphere from Chile to Canada.
Bush, Fox, and the Canadian prime minister just concluded talks in Texas last week securing the northern hemisphere into a single trading block and joint security. You Canadians no longer have a border with the US and we Americans no longer have a border with Mexico.
Last I read, Miami will be the capital of the Free Trade Area of the America's by 2012
http://www.ftaa-alca.org/alca_e.asp