International law in general — Relation to municipal law — EEC Treaty — Direct effect in national law — Duty of national courts to give precedence to Community law — Duty of national courts to review decisions of national authorities to ensure compliance with Community law — The law of the European Communities

The individual in international law — Aliens — Expulsion — Right of expulsion — Restrictions on right of expulsion — International Covenant on Civil and Political Rights, Article 13 — Requirement that expulsion be in accordance with law of the expelling State — Whethter U.N. Human Rights Committee empowered to determine correctness of State’s interpretation and application of its law

Treaties — Conclusion and operation — Operation and enforcement — Necessity for municipal legislation — EEC Treaty — Free movement of workers — Direct effect — The law of the European Communities

The individual in international law — Aliens — Position of aliens Subjection to territorial sovereignty of the receiving State — Free movement of workers within the EEC — Restrictions on grounds of public policy — Conditions imposed by Community law on restrictions of movement for reasons of public policy — Whether applicable to decisions of national authorities in individual cases as well as to legislative measures — Circumstances in which restriction of movement justified — Respect for individual's rights — Substantive and procedural requirements — When State may restrict residence of national of another member State to a particular area — Treaties Direct effect — The law of the European Communities