"Using data from the Consumer Expenditure Survey, we first document that the recent increase in income inequality in the United States has not been accompanied by a corresponding rise in consumption inequality. Much of this divergence is due to different trends in within-group inequality, which...

"We show how to decentralize constrained efficient allocations that arise from enforcement constraints between sovereign nations.In a pure exchange economy, these allocations can be decentralized with private agents acting competitively and taking as given government default decisions on foreign...

Bulow and Rogoff (1989) show that a country that has access to a sufficiently rich asset market cannot commit to repay its debts and therefore should be unable to borrow. This is because for any debt contract, there exists a time at which the country is made better off by defaulting and...