Canadian federalism involves the current nature and historical development of the federal system in Canada.
Pith and substance is a legal doctrine in Canadian constitutional interpretation used to determine under which head of power a given piece of legislation falls. The doctrine is primarily used when a law is challenged on the basis that one level of government has encroached upon the exclusive jurisdiction of another level of government.
Reference Re Same-Sex Marriage [2004] 3 S.C.R. 698, 2004 SCC 79, was a reference question to the Supreme Court of Canada regarding the constitutional validity of same-sex marriage in Canada. The ruling was announced December 2004, following arguments made two months prior.
Canadian constitutional law is the area of Canadian law relating to the interpretation and application of the Constitution of Canada by the courts. All laws of Canada, both provincial and federal, must conform to the Constitution and any laws inconsistent with the Constitution have no force or effect.
R v Morgentaler was a decision by the Supreme Court of Canada invalidating a provincial attempt to regulate abortions in Canada. This followed the 1988 decision R. v. Morgentaler, which had struck down the federal abortion law as a breach of section 7 of the Canadian Charter of Rights and Freedoms. In 1993, the provincial regulations were ruled to be a criminal law, which would violate the Constitution Act, 1867. That Act assigns criminal law exclusively to the federal Parliament of Canada.
Section 92(13) of the Constitution Act, 1867, also known as the property and civil rights power, grants the provincial legislatures of Canada the authority to legislate on:
13. Property and Civil Rights in the Province.
General Motors of Canada Ltd v City National Leasing is a leading Supreme Court of Canada decision on the scope of the Trade and Commerce power of the Constitution Act, 1867 as well as the interpretation of the Ancillary doctrine.
Quebec (AG) v Kellogg's Co of Canada is a leading constitutional decision of the Supreme Court of Canada on the pre-Charter right to freedom of expression. The Quebec Consumer Protection Act, which prohibited advertising to children through cartoons, was challenged by the Kellogg Company on the basis that it affected TV stations across the country. The Court held that the regulation of advertising is a matter within the authority of the province, and that the Act was valid law under the Property and Civil Rights power allocated to the province under section 92(13) of the Constitution Act, 1867.
R v Hydro-Québec, [1997] 3 S.C.R. 213 is a leading constitutional decision of the Supreme Court of Canada. The Court held that the Canadian Environmental Protection Act, a law for the purpose of protecting the environment, constituted criminal law and was upheld as valid federal legislation.
Section 91(27) of the Constitution Act, 1867, also known as the criminal law power, grants the Parliament of Canada the authority to legislate on:
27. The Criminal Law, except the Constitution of Courts of Criminal Jurisdiction, but including the Procedure in Criminal Matters.
Section 91(2) of the Constitution Act, 1867, also known as the trade and commerce power, grants the Parliament of Canada the authority to legislate on:
2. The Regulation of Trade and Commerce.
In Canadian Constitutional law, interjurisdictional immunity is the legal doctrine that determines which legislation arising from one level of jurisdiction may be applicable to matters covered at another level. Interjurisdictional immunity is an exception to the pith and substance doctrine, as it stipulates that there is a core to each federal subject matter that cannot be reached by provincial laws. While a provincial law that imposes a tax on banks may be ruled intra vires, as it is not within the protected core of banking, a provincial law that limits the rights of creditors to enforce their debts would strike at such a core and be ruled inapplicable.
Canadian Western Bank v Alberta [2007] 2 S.C.R. 3 is a landmark decision in Canadian constitutional law by the Supreme Court of Canada (SCC) relating to the division of powers between Federal and Provincial legislative bodies.
Reference Re Securities Act is a landmark opinion of the Supreme Court of Canada to a reference question posed on the extent of the ability of the Parliament of Canada to use its trade and commerce power.
Quebec (AG) v Canadian Owners and Pilots Assn, 2010 SCC 39, [2010] 2 SCR 536, also referred to as Quebec v. COPA, is a leading case of the Supreme Court of Canada on determining the applicability of the doctrines of interjurisdictional immunity and federal paramountcy in Canadian constitutional law.
Reference Re Assisted Human Reproduction Act is an appeal from the Quebec Court of Appeal to the Supreme Court of Canada on a reference question posed as to the constitutional validity of the Assisted Human Reproduction Act that had been passed by the Parliament of Canada.
Marine Services International Ltd v Ryan Estate, 2013 SCC 44 is a leading case of the Supreme Court of Canada concerning the coexistence of Canadian maritime law with provincial jurisdiction over property and civil rights, and it marks a further restriction upon the doctrine of interjurisdictional immunity in Canadian constitutional jurisprudence.
Canada (AG) v PHS Community Services Society, 2011 SCC 44, [2011] 3 SCR 134 is a leading Supreme Court of Canada case dealing with the application of the criminal law and healthcare heads of power found in section 91 and section 92 of the Constitution Act, 1867 and the principles of fundamental justice in section 7 of the Canadian Charter of Rights and Freedoms.
Quebec (AG) v Canada (AG), 2015 SCC 14 is a Canadian constitutional law case concerning the federal government's ability to destroy information related to the Canadian long-gun registry pursuant to the federal criminal law power.
Desgagnés Transport Inc v Wärtsilä Canada Inc, 2019 SCC 58 is a major Canadian constitutional law ruling by the Supreme Court of Canada concerning the interplay of federal and provincial jurisdictions under the Constitution Act, 1867.
