Social experiments frequently exploit data from administrative records. However, most administrative data systems are state-specific, designed to track earnings or benefit payments among residents within a single state. Once an experimental participant moves out of state, his earnings and...

"Freedom of movement is considered a basic human right by the majority of countries of the world. As defined in practice, it encompasses the right to move internally within a country, the right to move abroad, and the right to return from abroad. It does not include the right of an individual...