“…, I propose that the court’s answer should be that it is, in principle, contrary to article 20FEU for a member state to expel from its territory to a non-member state a third country national who is the parent of a child who is a national of that member state and of whom the parent has sole care and custody, when to do so would deprive the child who is a citizen of the Union of genuine enjoyment of a substance of his or her rights as a citizen of the Union. Nevertheless, in exceptional circumstances, a member state may adopt such a measure, provided that it: observes the principle of proportionality and is based on the personal conduct of the foreign national, which must constitute a genuine, present and sufficiently serious threat affecting one of the fundamental interests of society, and is based on an imperative reason relating to public security.” (Emphasis added)
“66. Mr Blundell [on behalf of the Secretary of State] invites this court to attach significance to the fact that the last phrase in that passage (‘and is based on an imperative reason relating to public security’) did not find its way into the judgments of the CJEU. He submits that the CJEU did not adopt that part of the recommendation made by the Advocate General. He also points out that the language used by the Advocate General is the language of (Directive 2004/38/EC), in particular article 28(3). He submits that it imposes a higher test than the test that was eventually adopted by the CJEU in the context of articles 20-21FEU. I agree with those submissions by Mr Blundell. 67. Mr Southey emphasises the use of the phrase ‘exceptional circumstances’ in the opinion of the Advocate General, at para 177, and in the judgment of the CJEU in (CS), at para 50. I do not attach the significance to that phrase which Mr Southey submits it has. In my view, it does not import an additional requirement which the state must satisfy on top of what follows; rather the phrase is a helpful summary of what follows (‘provided ...’). In other words ‘exceptional circumstances’ simply means that it is an exception to the general rule, which is that a person who enjoys the fundamental rights of an EU citizen cannot be compelled to leave the EU. It does not mean that, where the criteria set out in the proviso are satisfied, there is an additional hurdle that there must also be exceptional circumstances.”
“All such rights, powers, liabilities, obligations and restrictions from time to time created or arising by or under the Treaties, and all such remedies and procedures from time to time provided for by or under the Treaties, as in accordance with the Treaties are without further enactment to be given legal effect or used in the United Kingdom shall be recognised and available in law, and be enforced, allowed and followed accordingly; and the expression ‘enforceable EU right’ and similar expressions shall be read as referring to one to which this subsection applies.”
“1. Subject to the provisions of this Chapter, member states may restrict the freedom of movement and residence of Union citizens and their family members, irrespective of nationality, on grounds of public policy, public security or public health. These grounds shall not be invoked to serve economic ends. 2. Measures taken on grounds of public policy or public security shall comply with the principle of proportionality and shall be based exclusively on the personal conduct of the individual concerned. Previous criminal convictions shall not in themselves constitute grounds for taking such measures. The personal conduct of the individual concerned must represent a genuine, present and sufficiently serious threat affecting one of the fundamental interests of society. Justifications that are isolated from the particulars of the case or that rely on considerations of general prevention shall not be accepted.” (Emphasis added)
“2. The host member state may not take an expulsion decision against Union citizens or their family members, irrespective of nationality, who have the right of permanent residence on its territory, except on serious grounds of public policy or public security. 3. An expulsion decision may not be taken against Union citizens, except if the decision is based on imperative grounds of public security, as defined by member states, if they: (a) have resided in the host member state for the previous ten years; or (b) are a minor, except if the expulsion is necessary for the best interests of the child, as provided for in the United Nations Convention on the Rights of the Child of20 November 1989 [‘the UNCRC’].”
“51. …, a right of residence must nevertheless be granted to a third-country national who is a family member of that Union citizen, since the effectiveness of Union citizenship would otherwise be undermined, if, as a consequence of refusal of such a right, that citizen would be obliged in practice to leave the territory of the EU as a whole, thus depriving him of the genuine enjoyment of the substance of the rights conferred by that status … 52. However, a refusal to grant a right of residence to a third-country national is liable to undermine the effectiveness of Union citizenship only if there exists, between that thirdcountry national and the Union citizen who is a family member, a relationship of dependency of such a nature that it would lead to the Union citizen being compelled to accompany the thirdcountry national concerned and to leave the territory of the EU as a whole …”
“It should be pointed out that article 20FEU does not affect the possibility of member states relying on an exception linked, in particular, to upholding the requirements of public policy and safeguarding public security.” (Emphasis added)
“…, it must be held that, where the refusal of a right of residence is founded on the existence of a genuine, present and sufficiently serious threat to the requirements of public policy or public security, in view of, inter alia, criminal offences committed by a third-country national, such a refusal is compatible with EU law even if its effect is that the Union citizen who is a family member of that third-country national is compelled to leave the territory of the EU …”