Germany's border controls are likely to remain in place despite legal challenges , illustrating a sustained shift toward selective Schengen fragmentation that is already imposing measurable, though not systemic, economic costs by disrupting cross-border mobility and supply chains across the European Union . On April 27, an administrative court in Koblenz ruled that Germany's border controls with its neighbors violated the Schengen Agreement, finding that the German government had failed to demonstrate a sufficiently concrete threat to justify restricting the free movement of persons within the passport-free area. The case was brought by a German individual who was stopped at the Germany-Luxembourg border. The court concluded that the legal justification for the passport checks (primarily migration-related pressure ) was too vague to meet the Schengen treaty's exception criteria.