Principles of Subsidiarity and Proportionality at European Union Level, as Expression of National Interests

Objectives: For the European Union, the principle of subsidiarity is associated with the principle of proportionality, credited with maintaining the balance between the interests of Member States and those of European Union.  This study aims to analyze the principle of subsidiarity and the failures of EU and analyze the conditions which bring under regulation the implementation of this principle. The essay also examines interdisciplinary the impact of the implementation of the principles of subsidiarity and proportionality towards the powers exercised within the Union. Prior work: I’ve tried to find and debate hermeneutical new regulations and doctrinal opinions in this domain very important for those who practice international public law. Results: In European Union and Member States, the enforcement of  principles of law is viewed with great interest, being considered sources of law. Value: We think this article represents an important step in the disclosure of the problem raised by appliance of subsidiarity and proportionality principles on european and national level