This appeal concerned the constitutionality of section 12 of the National Security and Intelligence Committee of Parliamentarians Act, which limits parliamentary privilege, specifically freedom of speech and debate, for members of the Committee regarding the disclosure of classified information.
The application judge had declared section 12 ultra vires Parliament.
The Court of Appeal allowed the appeal, holding that Parliament possesses the plenary legislative authority under section 18 of the Constitution Act, 1867 to define and limit its own privileges, including freedom of speech and debate, without requiring a constitutional amendment.
The court found that section 12 is intra vires the federal Parliament, emphasizing that Parliament can legislate to define the scope of its own powers and privileges, especially when members voluntarily accept such limits.