The US current account deficit has been persistently large and has brought the country's ratio of foreign debt to GDP to 20%, a figure that is high by historical standards. This paper argues that while US solvency is not a near-term constraint on ongoing deficits, the sheer size of the US...

The central claim in this paper is that by explicitly introducing costs of international trade (narrowly, transport costs but more broadly, tariffs, nontariff barriers and other trade costs), one can go far toward explaining a great number of the main empirical puzzles that international...