A power of attorney or letter of attorney in common law systems or mandate in civil law systems is an authorization to act on someone else's behalf in a legal or business matter. The person authorizing the other to act is the "principal" or "grantor (of the power)", and the one authorized to act is the "agent" or "attorney-in-fact". The attorney-in-fact acts "in the principal's name" -- for example, by signing the principal's name to documents.
One kind of agent, an attorney-in-fact, is a fiduciary for the principal. The law requires an attorney-in-fact to be completely honest with and loyal to the principal in their dealings with each other. If the attorney-in-fact is being paid to act for the principal, the contract is a separate matter from the power of attorney itself, so if that contract is in writing, it is a separate document, kept private between them, whereas the power of attorney is intended to be shown to various other people.
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Sir Nicholas Fuller (1543 – 23 February 1620) was an English barrister and Member of Parliament. After studying at Christ's College, Cambridge, Fuller became a barrister of Gray's Inn. His legal career there began prosperously—he was employed by the Privy Council to examine witnesses—but was hampered later by his representation of the Puritans, a religious tendency which did not conform with the established Church of England. Fuller was repeatedly in contention with the ecclesiastical courts, including the Star Chamber and Court of High Commission, and was once expelled for the zeal with which he defended his client. In 1593 he was returned as the Member of Parliament for St Mawes, where he campaigned against the extension of recusancy laws. Outside of Parliament, he successfully brought a patents case which not only undermined the right of the Crown to issue patents but accurately predicted the attitude taken by the Statute of Monopolies two decades later.
Returned to Parliament in 1604 for the City of London, Fuller became considered the "leader of the opposition" due to his conflict with the government over policy, fighting the impositions on currants, the patent on blue starch, and opposing the proposed union with Scotland on legal and economic grounds. In 1607, in what became known as Fuller's Case, he again began challenging the Court of High Commission, and eventually got the Court of Common Pleas under Sir Edward Coke to agree that the common law courts had the power to free imprisoned ecclesiastical prisoners. These encounters with the ecclesiastical courts were described as "bruising", but by 1610 he was considered an "elder statesman", introducing bills on ecclesiastical reform and the statutory management of customs duties. He continued to sit in Parliament until his death on 23 February 1620. (Full article...)
A statute is a formal written enactment of a legislative body; a law enacted by a legislature. Typically, statutes declare, command or prohibit something. Statutes are distinguished from court law and unwritten law (otherwise known as common law) in that they are the expressed will of a legislative body, whether that be on the behalf of a country, state or province, county, municipality, or so on. Depending on the legal system, a statute may also be referred to as an "act." (Full article...)

The Canadian Charter of Rights and Freedoms (French: Charte canadienne des droits et libertés), often simply referred to as the Charter in Canada, is a bill of rights entrenched in the Constitution of Canada, forming the first part of the Constitution Act, 1982. The Charter guarantees certain political rights to Canadian citizens and guarantees the civil rights of everyone in Canada. It is designed to unify Canadians around a set of principles that embody those rights. The Charter was proclaimed in force by Queen Elizabeth II of Canada on April 17, 1982, as part of the Constitution Act, 1982.
The Charter was preceded by the Canadian Bill of Rights, enacted in 1960, which was a federal statute rather than a constitutional document. The Bill of Rights exemplified an international trend towards formalizing human rights protections following the United Nations' Universal Declaration of Human Rights, instigated by the country's movement for human rights and freedoms that emerged after World War II. As a federal statute, the Bill of Rights could be amended through the ordinary legislative process and had no application to provincial laws. The Supreme Court of Canada also narrowly interpreted the Bill of Rights, showing reluctance to declare laws inoperative. Between 1960 and 1982, only five of the thirty-five cases concerning the Bill of Rights that were heard by the Supreme Court of Canada resulted in a successful outcome for claimants. The relative ineffectiveness of the Canadian Bill of Rights motivated many[who?] to improve rights protections in Canada. The British Parliament formally enacted the Charter as a part of the Canada Act 1982 at the request of the Parliament of Canada in 1982, the result of the efforts of the government of Prime Minister Pierre Trudeau.
The Charter greatly expanded the scope of judicial review, because the Charter is more explicit with respect to the guarantee of rights and the role of judges in enforcing them than was the Canadian Bill of Rights. Canadian courts, when confronted with violations of Charter rights, have struck down unconstitutional federal and provincial statutes and regulations or parts of statutes and regulations, as they did when Canadian case law was primarily concerned with resolving issues of federalism. The Charter, however, granted new powers to the courts to enforce remedies that are more creative and to exclude more evidence in trials. These powers are greater than what was typical under the common law and under a system of government that, influenced by Canada's parent country the United Kingdom, was based upon Parliamentary supremacy. As a result, the Charter has attracted both broad support from a majority of the electorate and criticisms by opponents of increased judicial power. The Charter applies only to government laws and actions (including the laws and actions of federal, provincial, and municipal governments and public school boards), and sometimes to the common law, not to private activity. (Full article...)