Brad DeLong reproduces and responds to a well-reasoned critique of the pessimistic view that he and Paul Krugman share about the prospects for the American dollar.
The main point of the critique:
These authors–and the conventional wisdom generally–miss two, closely related points. First, foreign investors’ risk exposure to dollar assets has essentially nothing to do with the current account deficit. Second, the ability of U.S. households, firms, and the government to service their liabilities has essentially nothing to do with whether those liabilities are owed to foreign or domestic investors.
Click on the link to read Brad’s response, it is not easily summarized.
My take: Given the composition of my assets, my implicit position in the dollar market is long, but probably more because of inertia than anything else.