U.S. students had a much harder time getting into American graduate schools this past year than did their peers from China and the rest of the world. And while 1 year is far from a trend, a new report by the Council of Graduate Schools raises the question of how well Americans stack up against international students. Overall, the report says, 3% more international students received offers of admission for the 2010–11 academic year than in the previous year. That's the fifth increase in the past 6 years. But the survey from the Washington, D.C.,–based organization also found that 1%...