The President has the power to make treaties with other nations but the Senate must approve any treaty before it becomes official.
International relations (IR) is the study of relationships among countries, the roles of sovereign states, inter-governmental organizations (IGO), international non-governmental organizations (INGO), non-governmental organizations (NGO), and multinational corporations (MNC). International relations is an academic and a public policy field, and so can be positive and normative, because it analyzes and formulates the foreign policy of a given State. As political activity, international relations dates from the time of the Greek historian Thucydides (ca. 460–395 BC), and, in the early 20th century, became a discrete academic field (No. 5901 in the 4-digit UNESCO Nomenclature) within political science. However, International Relations is an interdisciplinary field of study.
Besides political science, the field of International Relations draws intellectual materials from the fields technology and engineering, economics, history, and international law, philosophy, geography, and social work, sociology, anthropology, and criminology, psychology and gender studies, cultural studies and culturology. The scope of International Relations comprehends globalization, state sovereignty, and international security, ecological sustainability, nuclear proliferation, and nationalism, economic development and global finance, terrorism and organized crime, human security, foreign interventionism, and human rights.
United States Senate
Foreign relations of the United States
Constitutional law is the body of law which defines the relationship of different entities within a state, namely, the executive, the legislature, and the judiciary.
Not all nation states have codified constitutions, though all such states have a jus commune, or law of the land, that may consist of a variety of imperative and consensual rules. These may include customary law, conventions, statutory law, judge-made law or international rules and norms.
The United States has formal diplomatic relations with most nations. The United States federal statutes relating to foreign relations can be found in Title 22 of the United States Code.
The Ponsonby Rule was a constitutional convention in the United Kingdom constitutional law that dictated that most international treaties had to be laid before Parliament 21 days before ratification.
On 11 November 2010 Part 2 of the Constitutional Reform and Governance Act 2010 was brought into force by a commencement order. Part 2 of the Act deals with the ratification of treaties and puts Parliamentary scrutiny of treaties on a statutory footing, effectively replacing the Ponsonby Rule.
The United States of America (USA), commonly referred to as the United States (US), America, or simply the States, is a federal republic consisting of 50 states, 16 territories, a federal district, and various overseas extraterritorial jurisdictions. The 48 contiguous states and the federal district of Washington, D.C., are in central North America between Canada and Mexico. The state of Alaska is the northwestern part of North America and the state of Hawaii is an archipelago in the mid-Pacific. The country also has five populated and nine unpopulated territories in the Pacific and the Caribbean. At 3.79 million square miles (9.83 million km2) in total and with around 316 million people, the United States is the fourth-largest country by total area and third largest by population. It is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many countries. The geography and climate of the United States is also extremely diverse, and it is home to a wide variety of wildlife.
Paleo-indians migrated from Asia to what is now the US mainland around 15,000 years ago, with European colonization beginning in the 16th century. The United States emerged from 13 British colonies located along the Atlantic seaboard. Disputes between Great Britain and these colonies led to the American Revolution. On July 4, 1776, delegates from the 13 colonies unanimously issued the Declaration of Independence. The ensuing war ended in 1783 with the recognition of independence of the United States from the Kingdom of Great Britain, and was the first successful war of independence against a European colonial empire. The current Constitution was adopted on September 17, 1787. The first 10 amendments, collectively named the Bill of Rights, were ratified in 1791 and guarantee many fundamental civil rights and freedoms.