France refused entry to a bus carrying North African migrants from Italy . Tunisians had been granted visa by Italy , allowing them to enter France . Italian foreign minister estimates 300,000 migrants could leave country . Schengen agreement allows migrants to travel freely between 25 European .
France refused entry to a train carrying North African migrants from Italy . Tunisians had been issued permits by Italy , allowing them to enter France . Italian foreign minister estimates 300,000 Libyans could leave country . Schengen agreement allows people to travel freely between 25 European .