Ademmer, Esther; Barsbai, Toman; Stöhr, Tobias; … - 2015
abolition of internal border controls in most European Union member states is rightly considered a blessing to EU citizens …. Internally, the Agreement facilitates social and economic interactions without impeding the security of EU citizens. Externally …, the Schengen Agreement has also helped to spread liberal norms and promote EU policies across EU borders, whenever …