Judicial review of EU soft law – Liberal-constitutionalism – Principle of effective judicial protection – The liberal-constitutional jurisprudence of the European Court of Justice – Action for annulment – Formalistic understanding of the concept of ‘legally binding effects’ – Preliminary ruling procedure – Limitations of the preliminary ruling procedure in granting effective judicial protection in relation to EU soft law – A plea for a liberal-constitutional reading of Articles 263 and 288 TFEU in relation to direct review of EU soft law