Constitutional Law sets out the organization and frame of government, the organs and powers of sovereignty, the distribution of political and governmental authorities and functions, the fundamental principles which are to regulate the relations of government and subject, and which prescribes generally the plan and method according to which the public affairs of the State are to be administered.
Public law refers to the branch of law concerned with regulating the relations of individuals with the government and the organization and conduct of the government itself.
International human rights law lays down obligations which States are bound to respect. By becoming parties to international treaties, States assume obligations and duties under international law to respect, to protect and to fulfill human rights. The obligation to respect means that States must refrain from interfering with or curtailing the enjoyment of human rights. The obligation to protect requires States to protect individuals and groups against human rights abuses. The obligation to fulfill means that States must take positive action to facilitate the enjoyment of basic human rights.
Through ratification of international human rights treaties, Governments undertake to put into place domestic measures and legislation compatible with their treaty obligations and duties. The domestic legal system, therefore, provides the principal legal protection of human rights guaranteed under international law. Where domestic legal proceedings fail to address human rights abuses, mechanisms and procedures for individual and group complaints are available at the regional and international levels to help ensure that international human rights standards are indeed respected, implemented, and enforced at the local level