Supremacy of EC law is that it takes priority over the domestic law of the Member States. So if there was a confrontation in a certain case where domestic law says one thing and EC law says something different then the EC Law would be used.
This is due to a thing called SubpoenaIn the US, national law overrules state law due to "the supreme law of the land" clause in the US constitution.This is similar to the doctrine known as the supremacy of EC law.
Federal supremacy establishes that federal law supercedes all state and local law. Federal supremacy establishes that federal law supercedes all state and local law.
The Supremacy Clause
The Supremacy Clause is in Aricle VI of the US Constitution.
Supremacy clause
Federal law to supersede state law.
Law of the Land
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The supremacy clause in the constitution that creates the order of law and the legal system for the United States. The supremacy clause is the provision in Article Six, Clause 2 of the United States constitution.
European Community Law has superiority over National Law of the 27 Member States based on Article 10 of the EC treaty (1957). The first case that established this superiority was the case of Costa v Enel (1964). Basically should there be any conflict between EC Law and national law, then EC Law will prevail. The European Court of Justice deals mainly with the interpretation of EC Law which under Article 234 allows them to make preliminary rulings should Member States fail to implement directives from the ECJ. This is the main difference to be aware of, the fact that Member States(National Law) are required to implement directives from the ECJ and they decide on the form and methods that this will take and that the ECJ interprets aspects of EC law that the Member states are uncertain about.
(Ensure that federal law always supersedes state law.)
(“Ensures”) A state law is overruled by a federal law went to conflict. -apex