The US current account deficit: A fundamentally flawed development?

The American current account deficit has once more become the subject of public debate. The size of the deficit is seen by some observers as the main cause of the recent decline in the exchange rate of the dollar. Can the latter be taken as confirmation of the increasing warnings that, in view of the dependence of the US economy on capital imports, adjustment processes such as a dramatic slump in the dollar exchange rate are imminent? What fundamental developments lie behind the US current account deficit, and do they give cause for significant adjustment reactions?