The dollar fell particularly sharply last week, though, as traders were reminded of the patently obvious – that the White House actually wants the dollar to fall. US Treasury officials have lately taken to staring into the TV cameras, puffing out their chests, then stating: "We are committed to a strong dollar." That's nonsense, of course, because a weaker currency boosts US exports and lowers the value of America's external debt.
Surely if you're debt is denominated in foreign currencies a weaker local currency increases the value of your debt in your own currency, and if it is denominated in your own currency (as is the case with almost all of the US's foreign debt) it makes no difference? I think perhaps he is thinking of inflation. I suppose it decreases that value for (say) the Japanese in yen terms, so perhaps they will care less about getting it repaid? Or is there something I've missed?

