In "Ender in Exile," Orson Scott Card emphasizes that voluntary colonization allows individuals to choose their paths based on their aspirations. This self-selection process is more effective than any imposed testing system, as it reflects the true motivation and desire of people to seek better opportunities. When people migrate out of a strong personal commitment and willingness, they often demonstrate resilience and ambition.

The author critiques historical efforts to control immigration by enforcing arbitrary desirable traits. He argues that the essence of being American is not defined by any particular characteristic but rather by the shared willingness of people to leave their past behind and embark on new journeys. This willingness to take significant risks is a fundamental quality that should be celebrated, as it drives both individual and national growth.