Immigration: EU Parliament approves Schengen changes
Border controls should be 'an exception'
Strasbourg stressed that the decision to reintroduce internal border controls should be ''an exception'' based on ''objective criteria'' and for a limited period of time ( 10 days for emergency situations, 30 days for periods of up to six months in cases of a particular threat to internal security).
The new system also has a clause providing for unannounced visits of experts, and clearer rules for follow-up evaluations.