CD & Anor v The Commonwealth of Australia

The High Court of Australia considered a dispute between two individuals, CD and another (the applicants), and the Commonwealth of Australia (the respondent). The applicants sought to challenge the validity of certain provisions of the *Migration Act 1958* (Cth) and related regulations, which they contended were invalid on constitutional grounds.

The central legal issue before the Court was whether the impugned provisions of the *Migration Act* and its subordinate legislation, which conferred broad powers on the Minister for Immigration, Citizenship and Multicultural Affairs to make decisions concerning the immigration status of non-citizens, were constitutionally invalid. Specifically, the applicants argued that these provisions contravened Chapter III of the Constitution by impermissibly vesting judicial power in the executive branch of government.

The Court's reasoning focused on the separation of judicial power and the constitutional limitations on the executive. It examined the nature of the powers conferred by the *Migration Act*, distinguishing between the exercise of executive functions and the exercise of judicial power. The Court applied established principles concerning the non-delegation of judicial power and the requirement that judicial power be vested in courts established under Chapter III of the Constitution. The Court considered whether the powers granted to the Minister were merely administrative or if they encroached upon the exclusive domain of the judiciary.

The Court ultimately dismissed the applicants' challenge, finding that the impugned provisions of the *Migration Act* and its subordinate legislation were constitutionally valid. The Court held that the powers conferred on the Minister were administrative in nature and did not constitute an impermissible exercise of judicial power, thereby upholding the validity of the legislative scheme.