Is Washington reluctant to let central banks sell dollar reserves?
Core argument: The US Exchange Stabilization Fund purchased yen primarily with euros rather than dollars in the intervention, limiting the volume of dollar sales required from Japanese authorities.
Last week’s intervention [in which the Exchange Stabilization Fund purchased yen, primarily with Euros] contains troubling information about the dollar. Central banks are accustomed to holding foreign reserves in dollars because markets in US Treasury securities are liquid. Central banks hold US Treasuries because they can be freely bought and sold and used in interventions. But not now, at least not in unlimited quantities. Instead, we see the US Treasury stepping in with euro sales as part of its contribution to the intervention, thus limiting the volume of dollar sales needed by the Japanese authorities. The bottom line is that Washington, fearing the consequences for US financial markets, is reluctant to see foreign central banks use their dollar reserves.

