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Case Title & Citation
Canada (Attorney General) v. McArthur, [1993] 2 F.C. 63 (FCA). -
Decision Summary (Neutral Overview)
This case concerned an application for mandamus, asking the Federal Court to compel government action. The Federal Court of Appeal clarified when a court should issue mandamus to force a public authority to perform a legal duty.
The Court held that mandamus requires:
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A clear public duty to act.
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The duty owed to the applicant.
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A prior demand for performance and a refusal or unreasonable delay.
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No other adequate remedy.
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Practical utility in granting the order.
On the facts, McArthur did not meet all criteria, so mandamus was not granted, but the decision became a leading statement of the test.
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Historical & Legal Context
Mandamus is an ancient prerogative remedy used to compel public officials to carry out non-discretionary duties. Canadian courts in the late 20th century refined its modern criteria in administrative and immigration contexts. -
Key Legal Principles Identified in the Case
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Mandamus is available where: duty + request + refusal + no other remedy + real utility.
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Courts can intervene to force public bodies to act where they are unlawfully failing to perform a clear duty.
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Implications for Haldimand, Loyalist, and Mohawk Questions
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McArthur supplies the procedural backbone for your Application for Writ of Mandamus.
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It supports the argument that:
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Canada and Ontario have clear duties rooted in Haldimand, Dorchester, Simcoe, and the 1791 confirmation;
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Mohawk Loyalist posterity has demanded performance (recognition, registry, jurisdictional clarity);
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Governments have refused or stalled;
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No ordinary remedy exists; and
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A court order would have real utility.
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Points of Interest to Mohawk of Grand River Posterity
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McArthur shows that courts are not helpless when governments “ghost” their obligations.
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It sets out a checklist that Mohawk petitioners can specifically tailor: identify the duty, document the demand and refusal, and argue the absence of alternative remedies.
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Unresolved Questions / Future Research Directions
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How will courts treat constitutional duties (Haldimand, Dorchester, Simcoe) alongside statutory duties in a mandamus application?
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Can mandamus be used not just to compel a single act (e.g., issuing a document) but to require a process (e.g., creating hereditary registries, halting unauthorized taxation)?
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Sources
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Canada (AG) v. McArthur, [1993] 2 F.C. 63 (FCA).
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Secondary commentary on mandamus in Canadian administrative law.


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