Unfortunately, the likely economic impact of this rapid depreciation is not benign. The Fed might like to believe that a cheaper dollar will improve trade by increasing U.S. exports and reducing imports. However, over the past two decades, and particularly in recent years, U.S. imports have been much more elastic in response to fluctuations in the U.S. dollar than exports have been. This suggests that provoking further dollar depreciation is likely to have negative effects on the global economy, owing to a shift away from imports, but with few positive effects for U.S. economic activity. Indeed, a further depreciation would unnecessarily create a negative wealth effect for U.S. consumers facing higher prices for imported goods and services. Any improvement in the trade deficit would be largely offset by downward pressure on U.S. consumption.
As a side note, some observers have suggested that QE represents nothing more than "printing money." While this might be accurate if the Fed never reverses the transactions, the most useful way to think about QE, in my view, is as an attempt to directly lower interest rates by purchasing Treasury securities. This interest rate effect - not any major inflationary outcome - is the cause of the dollar depreciation we are observing here. There is little doubt that the effect of large continuing fiscal deficits is long-run inflationary, but as I've noted repeatedly over the years, there is little correlation between inflation and temporary - even large - variations in the monetary base. Inflation is ultimately a fiscal phenomenon born of unproductive spending, regardless of how that spending is financed.
Scott Dauenhauer, CFP, MSFP, AIF