Dutch gov't taking steady action to discourage expats from coming to Netherlands - Dutch expats urge government to modernise passport system - Immigrants who stay longest in Netherlands are people who joined family, asylum seekers - EU ministers stress unity on immigration, dismiss Dutch opt-out - Grip on migration, simplified procedures Dutch gov't priorities next year: King's Speech - Dutch government eyes emergency laws to curb migration - Dutch parliament wants Cabinet to limit labor migration from non-EU countries - Dutch passport still 3rd most powerful in world; Dutch can visit 191 countries visa-free - Immigration issue challenges delicate talks to form new Dutch government