Legal System of Northern Mariana Islands

Northern Mariana Islands is located in Australia Oceania. It is geographically situated in oceania, islands in the north pacific ocean, about three-quarters of the way from hawaii to the philippines. The country achieved independence on none (commonwealth in political union with the us). The capital is Saipan.

Government Overview

Government Type: a commonwealth in political union with and under the sovereignty of the US; republican form of government with separate executive, legislative, and judicial branches Chief of State: President Donald J. TRUMP (since 20 January 2025) Head of Government: Governor David M. APATANG (since 24 July 2025) Cabinet: Sworn in by CNMI Chief Justice Alexandro Castro on Thursday, 24 July 2025 Administrative Divisions: no first-order administrative divisions as defined by the US government, but 4 municipalities are considered second-order: Northern Islands, Rota, Saipan, Tinian National Holiday: Commonwealth Day, 8 January (1978) Suffrage: 18 years of age; universal

Legal System

The legal system of Northern Mariana Islands is described as the laws of the US apply, except for customs and some aspects of taxation

Constitutional Framework

The constitution has the following history: partially effective 9 January 1978 (Constitution of the Commonwealth of the Northern Mariana Islands); fully effective 4 November 1986 (Covenant Agreement) Amendment Process: proposed by constitutional convention, by public petition, or by the Legislature; ratification of proposed amendments requires approval by voters at the next general election or special election; amendments proposed by constitutional convention or by petition become effective if approved by a majority of voters and at least two-thirds majority of voters in each of two senatorial districts; amendments proposed by the Legislature are effective if approved by majority vote

Judicial Branch

Highest Court(s): Supreme Court of the Commonwealth of the Northern Mariana Islands (CNMI) (consists of the chief justice and 2 associate justices); US Federal District Court (consists of 1 judge) Judge Selection: CNMI Supreme Court judges appointed by the governor and confirmed by the CNMI Senate; judges appointed for 8-year terms and another term if directly elected in a popular election; US Federal District Court judges appointed by the US president and confirmed by the US Senate; judges appointed for renewable 10-year terms Subordinate Courts: Superior Court

Legislative Branch

Note: note: the Northern Mariana Islands delegate to the US House of Representatives can vote when serving on a committee and when the House meets as the “Committee of the Whole House,” but not when legislation is submitted for a “full floor” House vote

Citizenship and Suffrage

Suffrage: 18 years of age; universal

Historical Background

Austronesian people settled the Northern Mariana Islands around 1500 B.C. These people became the indigenous Chamorro and were influenced by later migrations, including Micronesians in the first century A.D. and island Southeast Asians around 900. Spanish explorer Ferdinand MAGELLAN sailed through the Mariana Islands in 1521, and Spain claimed them in 1565. Spain formally colonized the Mariana Islands in 1668 and administered the archipelago from Guam.

This article provides a summary of the legal system and governmental structure of Northern Mariana Islands based on the CIA World Factbook. The Factbook is a public domain publication of the United States Central Intelligence Agency.