Judgment of the Court (Grand Chamber) of 22 June 2021.#Ordre des barreaux francophones et germanophone and Others v Conseil des ministres.#Reference for a preliminary ruling – Citizenship of the Union – Articles 20 and 21 TFEU – Directive 2004/38/EC – Right of citizens of the Union and their family members to move and reside freely within the territory of the Member States – Decision to terminate a person’s residence on grounds of public policy – Preventive measures to avoid any risk of the person concerned absconding during the period allowed for that person to leave the territory of the host Member State – National provisions similar to those applicable to third-country nationals under Article 7(3) of Directive 2008/115/EC – Maximum period of detention for the purpose of removal – National provision identical to that applicable to third-country nationals.#Case C-718/19.