Public international law

Public international law concerns the structure and conduct of states and intergovernmental organizations. To a lesser degree, international law also may affect multinational corporations and individuals, an impact increasingly evolving beyond domestic legal interpretation and enforcement. Public international law has increased in use and importance vastly over the twentieth century, due all to the increase in global trade, armed conflict, environmental deterioration on a worldwide scale, human rights violations, rapid and vast increases in international transportation and a boom in global communications.

Public international law is sometimes called the "law of nations". It should not be confused with "private international law", which is concerned with the resolution of conflict of laws. In its most general sense, international law "consists of rules and principles of general application dealing with the conduct of states and of intergovernmental organizations and with their relations inter se, as well as with some of their relations with persons, whether natural or juridical."

The scope of public international law

Public international law establishes the framework and the criteria for identifying states as the principal actors in the international legal system. As the existence of a state presupposes control and jurisdiction over territory, international law deals with the acquisition of territory, state immunity and the legal responsibility of states in their conduct with each other. International law is similarly concerned with the treatment of individuals within state boundaries. There is thus a comprehensive regime dealing with group rights, the treatment of aliens, the rights of refugees, international crimes, nationality problems, and human rights generally. It further includes the important functions of the maintenance of international peace and security, arms control, the pacific settlement of disputes and the regulation of the use of force in international relations. Even when the law is not able to stop the outbreak of war, it has developed principles to govern the conduct of hostilities and the treatment of prisoners. International law is also used to govern issues relating to the global environment, the global commons such as international waters and outer space, global communications, and world trade.

Whilst municipal law is hierarchical or vertical in its structure (meaning that a legislature enacts binding legislation), international law is horizontal in nature. This means that all states are sovereign and theoretically equal. As a result of the notion of sovereignty, the value and authority of international law is dependent upon the voluntary participation of states in its formulation, observance, and enforcement. Although there may be exceptions, it is thought by many international academics that most states enter into legal commitments with other states out of enlightened self-interest rather than adherence to a body of law that is higher than their own. As D. W. Greig notes, "international law cannot exist in isolation from the political factors operating in the sphere of international relations".

Breaches of international law raise difficult questions for lawyers. Since international law has no established compulsory judicial system for the settlement of disputes or a coercive penal system, it is not as straightforward as managing breaches within a domestic legal system. However, there are means by which breaches are brought to the attention of the international community and some means for resolution. For example, there are judicial or quasi-judicial tribunals in international law in certain areas such as trade and human rights. The formation of the United Nations, for example, created a means for the world community to enforce international law upon members that violate its charter through the Security Council.

Traditionally, states and the Holy See were the sole subjects of international law. With the proliferation of international organizations over the last century, they have in some cases been recognized as relevant parties as well. Recent interpretations of international human rights law, international humanitarian law, and international trade law (e.g., North American Free Trade Agreement (NAFTA) Chapter 11 actions) have been inclusive of corporations, and even of certain individuals.

Criminal law

The term criminal law, sometimes called penal law, refers to any of various bodies of rules in different jurisdictions whose common characteristic is the potential for unique and often severe impositions as punishment for failure to comply. Criminal punishment, depending on the offense and jurisdiction, may include execution, loss of liberty, government supervision (parole or probation), or fines. There are some archetypal crimes, like murder, but the acts that are forbidden are not wholly consistent between different criminal codes, and even within a particular code lines may be blurred as civil infractions may give rise also to criminal consequences. Criminal law typically is enforced by the government, unlike the civil law, which may be enforced by private parties.

Criminal law history

The first civilizations generally did not distinguish between civil and criminal law. The first written codes of law were produced by the Sumerians. Around 2100-2050 BC Ur-Nammu, the Neo-Sumerian king of Ur, enacted the oldest written legal code whose text has been discovered: the Code of Ur-Nammu. Another important early code was the Code Hammurabi, which formed the core of Babylonian law. Neither set of laws separated penal codes and civil laws.
A depiction of a 1600s criminal trial, for a suspected ghost.
A depiction of a 1600s criminal trial, for a suspected ghost.

The similarly significant Commentaries of Gaius on the Twelve Tables also conflated the civil and criminal aspects, treating theft or furtum as a tort. Assault and violent robbery were analogized to trespass as to property. Breach of such laws created an obligation of law or vinculum juris discharged by payment of monetary compensation or damages.

The first signs of the modern distinction between crimes and civil matters emerged during the Norman Invasion of England. The special notion of criminal penalty, at least concerning Europe, arose in Spanish Late Scolasticism (see Alfonso de Castro, when the theological notion of God's penalty (poena aeterna) that was inflicted solely for a guilty mind, became transfused into canon law first and, finally, to secular criminal law. The development of the state dispensing justice in a court clearly emerged in the eighteenth century when European countries began maintaining police services. From this point, criminal law had formal the mechanisms for enforcement, which allowed for its development as a discernable entity.

Administrative law

Administrative law is the body of law that governs the activities of administrative agencies of government. Government agency action can include rulemaking, adjudication, or the enforcement of a specific regulatory agenda. Administrative law is considered a branch of public law. As a body of law, administrative law deals with the decision-making of administrative units of government (e.g., tribunals, boards or commissions) that are part of a national regulatory scheme in such areas as international trade, manufacturing, the environment, taxation, broadcasting, immigration and transport. Administrative law expanded greatly during the twentieth century, as legislative bodies world-wide created more government agencies to regulate the increasingly complex social, economic and political spheres of human interaction.

Administrative law in common law countries

Generally speaking, most countries that follow the principles of common law have developed procedures for judicial review that limit the reviewability of decisions made by administrative law bodies. Often these procedures are coupled with legislation or other common law doctrines that establish standards for proper rulemaking. Administrative law may also apply to review of decisions of so-called quasi-public bodies, such as non-profit corporations, disciplinary boards, and other decision-making bodies that affect the legal rights of members of a particular group or entity.

While administrative decision-making bodies are often controlled by larger governmental units, their decisions could be reviewed by a court of general jurisdiction under some principle of judicial review based upon due process (United States) or fundamental justice (Canada). Judicial review of administrative decision, it must be noted, is different from an appeal. When sitting in review of a decision, the Court will only look at the method in which the decision was arrived at, whereas in appeal the correctness of the decision itself will be under question. This difference is vital in appreciating administrative law in common law countries.

The scope of judicial review may be limited to certain questions of fairness, or whether the administrative action is ultra vires. In terms of ultra vires actions in the broad sense, a reviewing court may set aside an administrative decision if it is patently unreasonable (under Canadian law), Wednesbury unreasonable (under British law), or arbitrary and capricious (under U.S. Administrative Procedure Act and New York State law). Administrative law, as laid down by the Supreme Court of India, has also recognized two more grounds of judicial review which were recognized but not applied by English Courts viz. legitimate expectation and proportionality.

The powers to review administrative decisions are usually established by statute, but were originally developed from the royal prerogative writs of English law, such as the writ of mandamus and the writ of certiorari. In certain Common Law jurisdictions, such as India or Pakistan, the power to pass such writs is a Constitutionally guaranteed power. This power is seen as fundamental to the power of judicial review and an aspect of the independent judiciary.