Economic conditions (2) Quality of life (2) Lifestyles (2) Cost and standard of living (2) Illegal aliens (2) Migration (2) Coste de vida (2) Nivel de vida (2) Migration (2) Coût et niveau de la vie (2) Intégration (2) Conditions économiques (2) Modes de vie (2) Migration (2) Immigrés clandestins (2) Qualité de la vie (2) Suisse (1) Intercession (1) Causes (1) Legal status, laws, etc (1) Young men (1) Vision (1) Trails (1) Solidarity (1) Social service (1) Scientists (1) Public domain (1) Proportion (1) Pictures (1) Necessity (Philosophy) (1)