In re Judiciary and Navigation Acts

The case concerned a reference by the Governor-General to the High Court of Australia regarding the validity of certain provisions of the Navigation Act 1912-1920. The primary dispute revolved around the constitutional validity of Part XII of the Judiciary Act 1903-1920, which purported to grant the High Court jurisdiction to hear and determine questions referred by the Governor-General concerning the validity of Commonwealth legislation. The parties involved included the Attorney-General for the Commonwealth, the Attorney-General for the State of Western Australia, the Attorney-General for the State of Victoria, and various shipowners and maritime unions.

The central legal issue before the High Court was whether Part XII of the Judiciary Act constituted a valid exercise of the legislative power conferred upon the Commonwealth Parliament by the Constitution. Specifically, the Court had to determine whether the jurisdiction conferred by Part XII fell within the scope of the judicial power of the Commonwealth as vested in the High Court by Chapter III of the Constitution, particularly concerning the meaning of "matter" as used in sections 75 and 76. The Court also considered whether the power could be supported under section 51(xxxix) of the Constitution, which deals with incidental powers.

A majority of the High Court, comprising Knox C.J., Gavan Duffy, Powers, Rich, and Starke JJ., held that Part XII of the Judiciary Act was not a valid exercise of legislative power. Their reasoning was that the provisions of Part XII, particularly section 93 which made the determination "final and conclusive and not subject to any appeal," indicated an intention to obtain an authoritative declaration of law, which is a judicial function. However, they found that the term "matter" in Chapter III of the Constitution requires the existence of some immediate right, duty, or liability to be established by the Court's determination, or the prevention, redress, or punishment of an act inhibited by law. They concluded that an abstract question of law referred by the Governor-General, without any specific dispute or claim of right between parties, did not constitute a "matter" within the meaning of the Constitution. Consequently, the Court held that Parliament lacked the power to confer such jurisdiction on the High Court.

Higgins J., dissenting, argued that Part XII was valid. He viewed the determination as a judicial decision, even if not settling a specific litigation between parties, and contended that the word "matter" in section 76 should be interpreted broadly to include such references. He also suggested that section 71, which vests judicial power in the High Court, did not preclude Parliament from vesting other jurisdictions or judicial functions in the Court, and that the power could be supported under section 51(xxxix) as being incidental to the execution of executive powers.