Opinion of Advocate General Pitruzzella delivered on 14 March 2019.#A v Udlændinge- og Integrationsministeriet.#Request for a preliminary ruling from the Østre Landsret.#Reference for a preliminary ruling — EEC-Turkey Association Agreement — Decision No 1/80 — Article 13 — Standstill clause — Family reunification of spouses — New restriction — Overriding reason in the public interest — Successful integration — Efficient management of migration flows — Proportionality.#Case C-89/18.