Oil price trending down. How about the dollar?

Over to Martin Feldstein:
[The] key determinant of the dollar’s long-term value is that it must decline enough to shift the US trade balance from today’s deficit to a surplus. That won’t happen anytime soon, but it is the direction in which the trade balance must continue to move. And that means further depreciation of the dollar.
An important factor in this process will be the future price of oil and the extent of US dependence on oil imports. In each of the past four years, the US imported 3.6 billion barrels of oil. At the current price of more than $140 a barrel, that implies an import cost of more than $500 billion. The higher the cost of oil, the lower the dollar has to be to achieve any given reduction in the size of the trade deficit. So a rising oil price as measured in euros or yen implies a greater dollar fall, and therefore an even higher oil price when stated in dollars.

Thanks to Ajay for the link.