PANAMA CITY, Panama - President Bush voiced his support on Monday for expanding the Panama Canal to allow bigger ships and more cargo to pass through the shortcut between the Atlantic and Pacific oceans. Bush said Panama must acknowledge that the 50-mile waterway "is to be used by everybody, that the canal is international, that there ought to be ... equal access." Panama is studying plans for widening and deepening the canal that could cost nearly $10 billion. The project must be approved in a national referendum, amid concerns about the environmental impact and the heavy debt involved. White House...