R v Gough; Ex parte

The case of *R v Gough; Ex parte* involved an application for a writ of prohibition brought by the applicant, Gough, against the respondent, the Commonwealth, and the Attorney-General of the Commonwealth. The dispute concerned the validity of certain regulations made under the *Defence Act 1903* (Cth) and the *National Security Act 1939* (Cth), which Gough alleged were beyond the scope of the legislative powers conferred by those Acts. The matter was heard by the High Court of Australia.

The primary legal issue before the Court was whether the regulations in question, which dealt with the control and requisitioning of property for defence purposes, were a valid exercise of the executive power of the Commonwealth, or whether they purported to exercise a legislative power that had not been validly delegated by Parliament. Specifically, the Court had to consider the extent of the powers granted to the Executive under the relevant legislation and whether the regulations enacted fell within those powers.

The Court's reasoning focused on the interpretation of the *Defence Act* and the *National Security Act*. It was held that the regulations were invalid because they purported to confer upon the Executive a power to legislate in a manner that was not authorised by the enabling statutes. The Court applied the principle that delegated legislation must be confined within the limits of the power granted by the Parliament, and that the Executive cannot assume powers that have not been expressly or impliedly conferred. The regulations were found to be an overreach, attempting to grant the Executive a broader legislative authority than was permitted.

The High Court made absolute the order nisi for a writ of prohibition, declaring the regulations to be invalid.