Federal law is the body of law created by the federal government of a country. A federal government is formed when a country has a central government as well as regional governments, such as subnational states or provinces, each with constitutionally entrenched powers. As a result, two or more levels of governments with constitutional powers exist within an established geographic territory. The body of law of the common central government is the federal law. Examples of federal governments include those of Australia, Brazil, Canada, Germany, Malaysia, Pakistan, India, Russia, the former Soviet Union and the United States. Source: Wikipedia (en)