To be eligible for citizenship, migrants must haved lived in Greece for ten of the previous twelve years. Their descendants face additional requirements to naturalise. The husbands and wives of Greeks can acquire nationality sooner, but only if they have a child of Greek nationality while married. To naturalise, migrants must fulfill conditions involving much administrative discretion and pay a high fee (€1500 for submitting an application). They must take an oath and pass a simple language interview, a vague 'good character clause', and a high criminal record check. Migrants who do naturalise are critically insecure in their status under the law, as they are in LV (see box). Greece reaches halfway to best practice on dual nationality.