Definition - What does Federal Question mean?
A federal question in simple terms may be defined as the basis of filing a lawsuit in a federal court because the lawsuit is based on subjects mentioned in US Constitution or a case associated with a federal statute. Such a question also gives federal court jurisdiction.
Justipedia explains Federal Question
Federal question also exists when there is a dispute between two different states or between US and other governments. Federal questions also forms the basis of moving a case from state court to a federal court.