"Were the U.S. to persistently earn substantially more on its foreign investments ("U.S. claims") than foreigners earn on their U.S. investments ("U.S. liabilities"), the likelihood that the current environment of sizeable global imbalances will evolve in a benign manner increases. However,...

"We evaluate the performance of U.S. investors' international portfolios over a 25-year period. Portfolio returns are formed by first estimating monthly bilateral holdings in 44 countries using high-quality but infrequent benchmark surveys that enable us to eliminate the geographical bias in...