Bullying is a no-no. President Obama has issued a warning to Beijing over using secret agents in America to scare Chinese expats into returning home. Some of the targets — hundreds have reportedly been pressured into moving back since last year — are wanted by Chinese authorities on economic corruption charges. Reportedly called Operation Fox Hunt, the effort tracks fugitives and in some cases tries to recover their illegal gains. The administration’s warning, meanwhile, is bound to ruffle feathers ahead of President Xi Jinping’s state visit next month.