The U.S. economy, once the envy of the world, is now viewed across the globe with suspicion. America has become shackled by an immovable mountain of debt that endangers its prosperity and threatens to bring the rest of the world economy crashing down with it. The ongoing sub-prime mortgage crisis, a result of irresponsible lending policies designed to generate commissions for unscrupulous brokers, presages far deeper problems in a U.S. economy that is beginning to resemble a giant smoke-and-mirrors Ponzi scheme. And this has not been lost on the rest of the world.