European Union law This article is part of the series: European
Union law (historically called "European Community law") is a
body of treaties and legislation, such as Regulations and
Directives, which have direct effect or indirect effect on the
laws of European Union member states. The three sources of
European Union law are primary law, secondary law and
supplementary law. The main sources of primary law are the
Treaties establishing the European Union. Secondary sources
include regulations and directives which are based on the
Treaties. The legislature of the European Union is principally
composed of the European Parliament and the Council of the
European Union, which under the Treaties may establish secondary
law to pursue the objective set out in the Treaties. European
Union law is applied by the courts of member states and where
the laws of member states provide for lesser rights European
Union law can be enforced by the courts of member states. In
case of European Union law which should have been tran