What would an abrupt cutoff of foreign capital inflows do to housing?
Core argument: Krugman argues the United States may face an emerging-market-style "sudden stop," an abrupt cutoff of the foreign capital inflows that cover the large US trade deficit.
[The 2008 US financial crisis] was very different from the emerging-market crises I used to spend so much time on. And right now I’m worried that the U.S. might be facing an emerging-market-type crisis: A “sudden stop,” an abrupt cutoff of inflows of foreign capital. If we have a crisis like that it could, in particular, cause a severe housing crash. We have a big trade deficit covered by large inflows of capital. A sudden stop to capital flows into America would mean that there would no longer be money to cover those big trade deficits — and this would mean a sharp drop in the foreign exchange value of the dollar. The impact on interest rates could be especially ugly. The United States relies on inflows of capital from abroad to pay for a significant part of domestic investment spending. Losing any significant part of that money would force interest rates higher. And what would be hit if interest rates surge? The answer, overwhelmingly, is housing. A sudden stop in capital inflows would mean a severe housing crash.

