Question juridique clé
Whether the family qualified for an exception from immigration limitation measures under Art. 13 lit. f OLE.
Solution extraite
No exceptional hardship was shown; long prior residence and integration were insufficient after a voluntary return to Bolivia.
Motifs extraits
The exemption is exceptional and must be applied restrictively. The family's voluntary departure to Bolivia broke the strength of their ties to Switzerland, and no extraordinary circumstance justified a return entitlement.