In the cases of NW and PQ (C-420/22 and C-528/22, 25.4.2024), the CJEU ruled on the withdrawal, on the basis of classified information, of the residence permit of a third-country national bringing up a child who is a Union citizen. It found in essence that this withdrawal must be subject to an effective remedy.

This ruling naturally invites to a comparison with the case of Muhammad and Muhammad v. Romania (80982/12) which was decided by a Grand Chamber of the ECtHR on 15.10.2020. It concerned proceedings as a result of which the applicants, Pakistani nationals living lawfully in Romania, were declared undesirable and deported, here too on the basis of classified information to which they had been denied access.

The set up of legal remedies in Europe is such as to allow decisions made by domestic courts of EU Member States on the basis of CJEU preliminary rulings to be made the subject of an application before the ECtHR. This is no different in the present case: domestic decisions implementing the ruling in NW and PQ can be challenged in Strasbourg on the basis of, notably, Muhammad and Muhammad. This makes a comparison of these two jurisprudences all the more interesting.

In NW and PQ, the CJEU based its reasoning on Article 20 TFEU (on citizenship of the Union), Directive 2003/109 concerning the status of third-country nationals who are long-term residents and Article 47 of the EU-Charter (right to an effective remedy and to a fair trial). In Muhammad and Muhammad, the ECtHR applied Article 1 of Protocol No. 7 to the Convention, on procedural safeguards relating to the expulsion of aliens.

Despite these quite different legal provisions, the two European Courts appear to agree to a very large extent on the guiding principles to be applied in respect of the expulsion of aliens on the basis of classified information to which access was denied in full or in part.

As the ECtHR put it:

Under Article 1 of Protocol No. 7, a right is secured to the alien to be informed, preferably in writing and in any event in a way allowing an effective defence, of the content of the documents and the information relied upon by the competent national authority which is deciding on the alien’s expulsion, without prejudice to the possibility of imposing duly justified limitations on such information if necessary. Article 1 § 1 of Protocol No. 7 requires in principle that the aliens concerned be informed of the relevant factual elements which have led the competent domestic authorities to consider that they represent a threat to national security and that they be given access to the content of the documents and the information in the case file on which those authorities relied when deciding on their expulsion. (§§ 128-129)

The CJEU, for its part, stated:

It follows from the Court’s settled case-law that if the judicial review guaranteed by the first paragraph of Article 47 of the Charter is to be effective, the person concerned must be able to ascertain the reasons upon which the decision taken in relation to him or her is based, either by reading the decision itself or by requesting and obtaining notification of those reasons, without prejudice to the power of the court with jurisdiction to require the authority concerned to provide that information, so as to make it possible for the person concerned to defend his or her rights in the best possible conditions and to decide, with full knowledge of the relevant facts, whether there is any point in applying to the court with jurisdiction, and in order to put the latter fully in a position in which it may carry out the review of the lawfulness of the national decision in question. (§ 81)

As regards the possibility of restrictions on these rights on grounds of national security, the two Courts are on the same line too.

The ECtHR indeed ruled:

Nevertheless, any limitations of the rights in question must not negate the procedural protection guaranteed by Article 1 of Protocol No. 7 by impairing the very essence of the safeguards enshrined in this provision (see, mutatis mutandis, Regner, cited above, § 148). Even in the event of limitations, the alien must be offered an effective opportunity to submit reasons against his expulsion and be protected against any arbitrariness. (§ 133)

The CJEU, for its part, stated:

Although the Member States may, in particular where national security so requires, decide not to grant the person concerned direct access to the entirety of his or her file in the context of a procedure relating to Article 20 TFEU, they cannot, without acting in breach of the principle of effectiveness, the general principle of sound administration and the right to an effective remedy, place the person concerned in a situation where neither that person nor his or her representative would be able to gain effective knowledge, where applicable in the context of a specific procedure designed to protect national security, of the substance of the decisive material contained in that file. (§ 97)

There is also convergence on how this is to be achieved in terms of the procedures to be followed. Both European Courts indeed concur in considering that there should be an independent review of the justification for the non-disclosure of the evidence for reasons of State security, and of the grounds on which the expulsion of the person concerned was decided. However, whereas the CJEU requires a judicial review, the ECtHR states that the review “should be entrusted to an authority, judicial or not, which is independent from the executive body seeking to impose the limitation” (§ 140).

Similarities, however, stop here. Some differences indeed appear as regards the modus operandi of this independent review. While both European Courts identify the same two possible scenarios, depending on whether the reviewing authority agrees, or not, with the impugned restrictions on the applicant’s access to the classified information and evidence, these scenarios give rise to different consequences.

In the event that the reviewing authority disagrees with the authority competent in matters of national security (“the competent authority”) as regards the need not to disclose some information to the person concerned, the ECtHR indeed requires the reviewing authority to be entitled to either declassify itself the classified information or invite the competent authority to review the said classification, failing which there will be a violation of Art. 1 of Protocol no. 7 (§ 142).

By contrast, the CJEU does not consider the possibility of a declassification to be required by Article 47 of the Charter, provided that the reviewing court has the power to draw “appropriate conclusions” from the refusal to declassify, i.e. the power to disregard any information which was not disclosed to the person concerned when making its decision on the residence permit at stake, which seems a more radical solution (§§ 113-115).

But what if the reviewing authority agrees with the non-disclosure of all or part of the classified information? The European Courts concur in considering that this conclusion can only be the result of a weighing up, by the reviewing authority, of the national security interests against the alien’s interests, the purpose being to ensure that the very essence of the rights of the person concerned is preserved and that the substance of the grounds for the impugned decision is communicated to that person (Muhammad and Muhammad § 143, 145; NW and PQ, § 111, relying on ZZ).

How is this to be achieved? The CJEU is completely silent on this. Yet it is clear that such decisions which confirm the impugned expulsion on the basis of non-disclosed classified information are likely to be challenged on the merits, as happened e.g. in Muhammad and Muhammad and, mutatis mutandis, before the Belgian Supreme Administrative Court (Conseil d’Etat) in the case which gave rise to the Advisory Opinion on Request no. P16-2023-001.

This is an important aspect for national judges and authorities, as it raises the question of the test to be applied by the reviewing authority under Article 1 of Protocol no. 7, which is also the test which will be applied by the ECtHR in the event of an application against a final domestic judgment, regardless of whether it is compliant with the CJEU’s case-law.

According to the ECtHR, this test is about whether, in the light of the proceedings as a whole, the very essence of the rights secured to the alien by Article 1 § 1 of Protocol no. 7 has been preserved (§ 157). Consequently:

Should the national authorities have failed to examine – or have insufficiently examined and justified – the need for limitations on the alien’s procedural rights, this will not suffice in itself to entail a violation of Article 1 § 1 of Protocol No. 7. In any event, the Court will also ascertain whether any counterbalancing measures have been applied in the case at hand and, if so, whether they were sufficient to mitigate the limitations of the alien’s procedural rights, such as to preserve the very essence of those rights. (§ 144)

As non-exhaustive examples of such counterbalancing measures, the ECtHR mentions those which relate to the relevance of the information actually disclosed to the alien, the information provided as to the conduct of the domestic proceedings, the representation of the alien and the powers of the reviewing independent authority (§§ 151-157).

Applying these criteria in Muhammad and Muhammad v. Romania, the ECtHR found a violation of Article 1 of Protocol No. 7, on the ground that the limitations imposed on the applicants’ enjoyment of their rights under that provision had not been counterbalanced in the domestic proceedings such as to preserve the very essence of those rights (§ 206).

In its Advisory Opinion on Request no. P16-2023-001 “on whether an individual may be denied authorisation to work as a security guard or officer on account of being close to or belonging to a religious movement”, the ECtHR relied on the same criteria in respect of the classified information which had not been disclosed to a claimant who challenged the refusal by the administration to give him the authorisation to work as a security guard. In this case, the Belgian Supreme Administrative Court, despite having the power to consult the classified documents compiled by the State Security Service, had not made use of it until after the ECtHR’s Advisory Opinion which considered this power to be an important safeguard, along with others (§§ 48 and 117).

In sum, both the Convention and EU law accept that information and evidence serving as the basis for a decision to expel an alien may need to remain undisclosed for State security reasons, but only on condition that the very essence of the defence rights of the person concerned is preserved, which requires a review by an independent authority. However, unlike the CJEU, the ECtHR is much more explicit about the test, the criteria and the safeguards to be applied by that authority, the decisions of which can, if final, be made the subject of an application in Strasbourg.