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The incorporation of international law is the process by which international agreements become part of the municipal law of a sovereign state. A country incorporates a treaty by passing domestic legislation that gives effect to the treaty in the national legal system.〔(【引用サイトリンク】title=Irish Treaty Practice )〕 Whether incorporation is necessary depends on a country's domestic law. Some states follow a monist system where treaties can become law without incorporation, if their provisions are considered sufficiently self-explanatory. In contrast dualist states require all treaties to be incorporated before they can have any domestic legal effects. Most countries follow a treaty ratification method somewhere between these two extremes. ==Monist v. dualist systems== In monist systems like the Netherlands, treaties can normally only be ratified only after they are approved by the legislature, but once this is done the treaties become legally binding in domestic law if they are self-executing. France is an example of a monist system. Under French law ratified treaties are considered to be equivalent or even superior to domestic legislation.〔Art. 55, ''(French Constitution of 4 October 1958. )''〕 However ratification must often be approved by the Parliament, especially in cases where the treaty "modifies provisions which are matters for statute".〔Art. 52, ''(French Constitution of 4 October 1958. )''〕 In such cases, incorporation is often either redundant or very little is required. The dualist position is exemplified by the United Kingdom, where treaty-making are considered to be the exclusive competence of "Her Majesty's Government" (the executive). Hence all treaties must be incorporated if they are to have any effect on domestic legislation. To do otherwise would violate the doctrine of the sovereignty of Parliament which reserves legislative primacy to the British parliament. However treaties may have interpretative value, where a judge does consider that Parliament (in the absence of clear contrary intention) did not intend that an Act conflict with a ratified treaty. The position of the United States is intermediate to the two extremes described above. The Supremacy Clause (VI.2) of the United States Constitution states that "all Treaties made, or which shall be made, under the authority of the United States, shall be the supreme Law of the land." However, the term "treaty" has a more restricted sense in United States Law than in international law. Of the more than 16,000 international agreements entered into by the United States between 1946 and 1999, only 912 were ratified by the required two-thirds of the Senate under Article II.2.2 (the "Treaty Clause") of the Constitution ("treaties" under U.S. law).〔(''Treaties and other International Agreements: the Role of the United States Senate'' ) (Congressional Research Service 2001).〕 The Supreme Court has also limited the direct effect of ratified treaties, notably in the case of ''Medellín v. Texas'' (2008). Hence, almost all treaties must be incorporated into U.S. federal law by Congress to have effect. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「incorporation of international law」の詳細全文を読む スポンサード リンク
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