Is Tiebout competition draining people out of California? That theory suggests that people vote with their feet, but its existence in the real world has been questioned. This study from the Manhattan Institute makes for some compelling reading about that real world during the last ten or fifteen years.
Foreign migration remained a net positive for California, in every sense of the word. However, this trend masked the out-migration of domestic residents to other U.S. states, which looks like it averaged 200,000 people a year for the last 20 years.