Commonwealth of Australia v AJL20 [2021] HCA 21

Commonwealth of Australia v AJL20 [2021] HCA 21

The High Court held that the detention of an unlawful non-citizen under ss 189(1) and 196(1) of the Migration Act 1958 (Cth) is not rendered unlawful merely by delay in the Executive's performance of its duty to remove the person as soon as reasonably practicable under s 198(6); detention continues to be authorised...

Source-derived case information.

Parties
Appellant: Commonwealth of Australia; Respondent: AJL20
Jurisdiction
Australia
Judgment Date
23 June 2021
Procedural Posture
Appeal / Final Judgment
Outcome
Appeals allowed
Legal Topics
False Imprisonment, Executive Detention, Removal of Unlawful Non Citizen, Separation of Powers, Mandamus, Habeas Corpus, Parliamentary Supremacy, Non Refoulement, Statutory Interpretation
Constitutional Law Immigration Law Tort Law False Imprisonment Executive Detention Removal of Unlawful Non Citizen Separation of Powers Mandamus +4 more

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Parties

Commonwealth of Australia

Appellant

AJL20

Respondent

Procedural Posture

Appeal / Final Judgment

Legal Issues

  1. 1 Whether detention of an unlawful non-citizen by the Executive under ss 189(1) and 196(1) of the Migration Act 1958 (Cth) ceases when removal should have occurred had the Executive acted with all reasonable despatch, or continues until actual removal or grant of visa
  2. 2 Whether Parliament's power to authorise and require detention until actual event of removal or grant of visa is limited by implications of Chapter III of the Constitution
  3. 3 Whether non-performance by the Executive of statutory duties erases legitimate non-punitive statutory purposes which those duties support

Ratio Decidendi

The High Court held that the detention of an unlawful non-citizen under ss 189(1) and 196(1) of the Migration Act 1958 (Cth) is not rendered unlawful merely by delay in the Executive's performance of its duty to remove the person as soon as reasonably practicable under s 198(6); detention continues to be authorised until the actual occurrence of one of the terminating events specified in s 196(1), and the appropriate remedy for delay is mandamus. Orders for release are inconsistent with the statutory scheme, and the rule of law is upheld by enforcing the statutory duties, not by release contrary to the Act.

Court Disposition

Appeals allowed

Orders

  • Set aside the orders of the Federal Court of Australia made on 29 September 2020 and 11 September 2020, respectively.
  • In C16/2020, ordered that the proceeding be dismissed with costs.